Meek Mill is unable to star in Will Smith's upcoming movie '2 O'Clock Boys' because of his probabtion conditions.

Meek Mill

Meek Mill

The hip-hop artist was due to play Wheelie Wayne in the film - about the infamous West Baltimore illegal-dirt-bike riders - but missed out on the role, after he was ordered by Judge Genece Brinkley not to work or perform before his sentencing on February 6 for gun and drug charges.

The probation rule prevented Mill from travelling to Hollywood in November to meet with Will's production company, Overbrook Entertainment, because he had to take a urine test, just four days after a previous test.

And it's likely the 28-year-old performer will have to cancel a Las Vegas concert he had planned with his girlfriend, 'Anaconda' hitmaker Nicki Minaj.

If he mises the event - to be held on New Years Eve - Meek could lose out on his $140,000 paycheck.

What's more, it was hoped the concert would be the first step in getting the star a residency at Drai's Beach Club and bolster his career.

A source told Page Six: "He's at a defining moment in his career. And they are prohibiting him from work."