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He's one of the biggest free agents in baseball ... but Jose Bautista is still doing big things in Toronto!

Bautista -- who just became a free agent after 8 years with the Blue Jays -- surprised a bunch of young fans at The Hospital for Sick Children in Toronto this weekend ... to spread some holiday cheer.

We're told Jose was in town to hit some holiday parties -- but felt it was important to carve some time out of his schedule to kick it with some of his biggest supporters.

Jose spent about an hour in the ward visiting with some brave kids fighting cancer who also happened to be HUGE Blue Jays fans (maybe some of them tried to convince him to re-sign with Toronto!)

Good stuff.

Gilbert Arenas got a huge assist from the judge in his child support case ... his monthly payments to his ex were just slashed big time.

Sources close to the former couple tell us ... Gilbert's child support checks to his baby mama, Laura Govan, will now be under $10k a month ... a huge drop from around the $40k he claimed he was paying. Arenas has recently said he's not as rich as everyone thinks ... and apparently there's some truth to that.

Gilbert admittedly has no chill, though ... so he took the opportunity to gloat about his big win in court and troll Laura at the same time.

Sources close to Govan tell us she has no idea why Arenas continues to insult and torment her -- since she's not doing it to him -- but all she wants now is for him to leave her alone.

10:30 AM PT -- Sources connected with Jackie tell us her mom jumped the gun. We're told the Bocelli duet was discussed as a possibility, but nothing's written in stone -- especially because Andrea hasn't yet signed on the dotted line for the inauguration -- but everyone has their fingers crossed.

Donald Trump didn't just land Jackie Evancho for the National Anthem at the inauguration -- we've confirmed he's also locked down Andrea Bocelli for at least one song, maybe 2.

Jackie's mother, Lisa, tells TMZ ... the Donald himself called Jackie's manager to invite Jackie to sing the National Anthem on Jan. 20th. We're told it was sorted out Tuesday and Jackie excitedly accepted.

Lisa also says the 16-year-old was asked to do a second performance with Bocelli. It's unclear if he's doing a solo, but it's Andrea Bocelli ... so we're guessing yes.

Jackie's no stranger to big stages. The "America's Got Talent" runner-up performed for Prez Obama twice. She also performed at a charity event Donald attended when she was 11 -- and she even sang with Bocelli last year in Italy.

Congrats!

Kanye West just marched into Trump Tower for a face-to-face with the President-elect.

TMZ has learned Kanye will have a 15 minute sit-down with Donald Trump Tuesday morning. Kanye requested the meeting, and Trump agreed ... according to our sources.

Still unclear exactly what they'll cover in the meeting. Inauguration? Cabinet post?

Anything goes with these two.

Story developing ...

Lamar Odom has checked himself into a rehab facility ... TMZ has confirmed.

Lamar is getting treatment in the San Diego area, and made the decision to go on his own ... according to a source close to the former NBA star. We're told he's been there for 4 days, and will remain there for an extended stay.

In the last year, we've seen Odom drinking at bars -- most notably on Easter weekend -- despite his hardcore addiction, and near fatal OD a year ago. Earlier this month, he was at Delilah in West Hollywood, although we don't know if he was drinking there.

Khloe Kardashian convinced him to enter treatment once before, in August 2012, but he only stayed for 3 weeks.

We broke the story ... a judge has finally signed off on Lamar and Khloe's divorce, and they'll officially be single on December 17.

E! first reported Lamar's rehab stint.

"Keeping Up with the Kardashians" and "Jersey Shore" have found a way to unite, not on TV, but in real life.

TMZ has confirmed Khloe Kardashian's BFF, Malika Haqq, has been dating guido Ronnie Magro for a month now.

He posted a pic Thursday of the two kissing on a hike in L.A. ... no word if a little GTL followed.

The two hit it off while shooting season 2 of "Famously Single." Production wrapped about 3 weeks ago and we're told they've been a thing since early November, so it's possible it'll play out on the show.

Ronnie's other famous relationship was with his "Jersey Shore" co-star Sammi Sweetheart, but we're told he's telling friends he's into more booty these days.

"MythBusters" star Grant Imahara just busted another myth ... nerds do score hot chicks, and he put a ring on his to seal the deal.

Grant popped the question to his longtime GF, Jennifer Newman, Wednesday night at Clifton's Cafeteria in downtown L.A. Most of the 250 guests thought they were there for Jennifer's surprise bday party, until Grant got down on bended knee.

As for the ring, it's a vintage 1.56 carat sparkler Grant found at an antique dealer in San Francisco for around $20k.

No wonder her answer was "F*** yeah!"

Just when Casper Smart thought 2016 couldn't get worse -- he totaled his Mercedes sports car, but on the positive side ... he was able to walk away from the nasty wreck.

Casper smashed into a guardrail and a tree in Woodland Hills, CA around midnight ... according to cops. The collision smashed in the driver's side of the car and deployed his airbags. Police say there were no other vehicles involved ... it appears he just lost control, and alcohol was not a factor.

Jennifer Lopez's ex was not injured -- kudos to Mercedes -- and actually posted a pic of his baby with "#wasntmyfault."

6:35 PM -- Young Thug's Seattle fans just got screwed ... he says he didn't make his backup flight, so he's postponing Wednesday night's show to Dec. 12.

Young Thug gave two female Alaska Airlines employees the business for trying to make him miss his flight and his show ... at least that's the way he saw it.

The rapper went in on the women pretty hard -- calling them "peasants" and "ants" with "nappy" hair. You can tell they're pissed as he tried to offer them $15k to quit their jobs.

A rep for the airline tells TMZ ... Thug was supposed to be on a flight from ATL to Seattle, but he arrived after their 45 minute cutoff period. We're told they still offered him a seat on a partner flight, but he declined..

It's unclear if he's going to make it in time for his 7 PM gig in Seattle.

We don't know what was said before Thug started recording, but the way he treats the women here ... makes him seem like a complete tool.

Chad Johnson dropped $4,000 to take 200 people to the movies Tuesday night -- just because he felt like it.

The movie -- "Office Christmas Party."

The location -- Davie, FL.

Johnson tells TMZ Sports he sent out flyers and email blasts and comped the first 200 people to arrive just because he "wanted to keep the holiday spirit alive." He's been doing stuff like this for years.

By the way, he also played cupid ... hooking up single guests with other singles.

PARENTS NIGHT OUT!!!

Iman Shumpert and his smokin' hot wife, Teyana Taylor, hit the strip club TOGETHER Tuesday night -- gettin' their lap dance on with some of the hottest women in town ... and TMZ Sports has the footage.

It all went down at Aces New York -- where rapper A-Boogie was celebrating his 21st birthday ... and Iman and Teyana rolled through to join the celebration.

We're told the couple dropped a couple thousand on bottles -- PLUS the "couples twerk" session ... because, hey, why the hell not?

As for A-Boogie, we're told he dropped $5k on Ace of Spades champagne and Patron.

Nicki Minaj is getting more than social media backlash for posting video of a woman losing it in Miami -- now a mental health organization is dressing her down for allegedly mocking the woman.

The National Alliance on Mental Illness (NAMI-Miami) is sounding off, just like several of Nicki's fans, saying the clip is an invasion of the woman's privacy, which dehumanizes her.

NAMI says it's pissed Nicki's used her fame -- she has 70 million IG followers -- to influence young people in a negative manner. A rep for NAMI says, "Nobody would make fun of a cancer patient, and mental illness is an illness like any other."

DJ Khaled's a key figure who requires da best of everything ... especially when it comes to telling time.

The rapper celebrated his 41st birthday over the weekend at Komodo Miami hosted by Haute Living. He was surrounded by da best of friends ... including Hublot CEO Ricardo Guadalupe who gave him one of the ballest presents EVER.

The new bling -- valued at upwards of $100k -- featured his "major key" logo on each side and it was decorated with "We The Best" on the caseback. And don't bother trying to cop a similar watch ... it's definitely a special edition -- as in 1 of 1.

And he had fun showing it off.

Thomas Edison wasn't ok with people ripping off his ideas, but this is your chance to rip off a bunch of his old memorabilia -- if you like grossly overpriced electric relics.

Heritage Auction is hawking 5 light bulbs and a socket preserved from the 19th century. Edison Electric used the gear during lawsuits against companies he claimed were copying his bright ideas. Heritage's estimate for the lot is $10,000 ... but expect to spend much more than that conservative number if you're interested.

Not into dead light bulbs? There's also a set of keys to Edison's Menlo Park lab where he invented his first commercial light bulb. Asking price -- $6,000!

The Jefferson Parish Sheriff's Dept. has dispatched at least 2 cars to patrol the home of the man who shot and killed Joe McKnight ... TMZ Sports has learned.

9:19 AM PT -- TMZ Sports has obtained court documents showing the exact conditions of Manziel's agreement.

He must complete the following ...

1) Complete anger management course approved by the court

2) Attend domestic violence victim impact panel

3) Participate fully in the NFL's Policy and Program for Substance of Abuse, or if program is unavailable, Drug and Alcohol Rehabilitation at court approved location

4) No contact with Colleen Crowley

Johnny Manziel struck a deal with prosecutors in his domestic violence case -- in which he needs to keep his nose clean for a year and seek treatment ... and the case will be dismissed.

Manziel was charged with misdemeanor assault for a January 2016 incident involving his ex-girlfriend, Colleen Crowley, in which he allegedly struck her during a heated argument.

The Dallas County Criminal District Attorney's Office says the ex-NFL star has agreed to a "Conditional Dismissal Agreement."

The agreement spells out a number of conditions Manziel needs to live up to over the next year ... including "treatment and/or counseling" and staying out of trouble.

If he lives up to his end of the bargain, the charge will be dismissed.

The D.A. says the agreement is supposed to jump start Manziel on a path to live a better life and show him "how to make better choices when facing conflict.".

As for Colleen ... she was at a PartyNextDoor concert Thursday night.

[h/t CBS DFW]