US rapper 50 Cent has restated his desire to work with former Take That star Robbie Williams.

The pair had been due to work together on the rapper's 2007 album 'Curtis', but the project was shelved after Williams entered rehab.

However, 50 Cent told Reuters that he was optimistic the pair would still collaborate.

“Hopefully on one of my projects in the future we will have a chance to work with each other,” he said.

50 Cent is currently at the Sundance Film Festival promoting his new film production company, Cheetah Vision.

The rapper is due to release his new album, 'Before I Self Destruct', this spring.

(by Jason Gregory)