Eminem Has "Beef" with Adrian Grenier on 'Entourage' Finale

The new season of Entourage kicked off on Sunday and everyone's buzzing about the celebrity guest stars who will make be making cameos this season. Eminem is slated for a highly-anticipated cameo on the season 7 finale, and reportedly the rapper has a problem with one of the show's main characters, Vince, played by Adrian Grenier.

“He has a little conflict — a little beef — with Vince,” the creator of the hit HBO show, Doug Ellin, told Entertainment Weekly.

Eminem, who released Recovery last week, shot a scene for Entourage that takes place “at a platinum record party for his album, which by the time this airs will be platinum, I’m sure,” Ellin said.

The rapper is not performing during the finale episode, however, Christina Aguilera is!

“She’s doing Ari a favor and performing at a party for him,” Ellin said.

Ellin says the episode, airing on Sept. 12, is a “pretty dramatic season finale,” and also features Minka Kelly.