WWE Legend Booker T Training Ex-NFLer Brennan Williams For Pro Wrestling Stardom

WWE legend Booker T isn't dropping elbows anymore ... but he's got a brand new challenge ... creating the next pro wrestling superstar out of one of Tom Brady's ex-teammates.

TMZ Sports spoke with Brennan Williams ... who's decided to call it quits on a 3 year NFL career as a lineman for the Texans, Jaguars, and Patriots so he can take a shot at pro wrestling.

Brennan tells us that he won't be stepping into the ring blind 'cause he's gonna have Booker T -- a WWE hall of famer -- showing him the ropes (and turnbuckles) of the grappling game.

"He’s got a school in Houston called WXF that I’m joining (along with) his promo company."

Williams says he and Booker T have a vision ... one that involves him locking arms with the big boys very soon.

"I’m looking to get my feet wet while training with Booker and shooting for a contract with the WWE in January. That’s my plan."

We also spoke with Booker T himself who says Williams has all the tools to do what The Rock, Goldberg and Ahmed Johnson did ... that is go from big time football to the WWE.

"Brennan definitely fits the profile and athletic protocol of a WWE Wrestler. He fits the build perfectly."

He goes on to say Brennan might have an advantage over those guys ... cause he actually has a deep love and understanding of the sport.

"Most of the time with NFL players, wrestling is a sort of last resort but Brennan was actually a fan before anything. I’m more than glad to help him out."