Trump to Rachel Uchitel -- Beat It!

7/19/2010 1:40 PM PDT

Donald Trump to Rachel Uchitel -- Beat It!

Rachel Uchitel has been fired by Donald Trump before she was officially hired, because Trump tells TMZ he's pulling his offer for her to do "Celebrity Apprentice."

TMZ broke the story ... Trump offered her a spot on the next "Celebrity Apprentice."  A few minutes ago we told Trump that Rachel agreed over the weekend to go on "Celebrity Rehab."  Trump's reaction:  "It's a terrible decision.  We have zero interest in her now."

Trump thinks Rachel will regret her decision.  "Look at what 'Celebrity Apprentice' did for Piers Morgan.  He's getting Larry King's job. She made a bad mistake."

The Donald was also quick to point out that it was Rachel who approached him in the first place, not the other way around.

Trump's final shot:  "'Celebrity Apprentice' is a huge show and 'Celebrity Rehab' is not.  I have 10 people who want to be on the show for every slot that's available.  I'm moving on."