US rapper 50 Cent has claimed that his new album, 'Before I Self Destruct', will mark the proper return of Eminem.

Eminem, who is the only guest rapper to appear on the album, has recorded vocals for the song 'Norman Bates Motel'.

Although Eminem confirmed the release of his own LP earlier this week, 50 Cent described the track, 'Norman Bates Motel', as "the return of Slim Shady”.

"So, far I've kinda kept to myself and wrote what I felt was exciting from my perspective," 50 Cent told MTV.

"It's always fun working with Em for me. He's in a space where he has the luxury of just being able to sit down.”

50 Cent is due to release 'Before I Self Destruct' on December 9th, which suggests Eminem's 'Relapse' will follow at a later date.

As previously reported on Gigwise, Eminem said in a recent interview that he had no plans to take his LP on the road.

"I'm not saying I will or I won't but I'm not ready to tour at least at this moment right now," he said.

Eminem has spent the last five months recording the record with producer and long time collaborator Dr Dre.