50 Cent Will Quit if Kanye Outsells Him

50 Cent believes that his new album will outsell Kanye West's upcoming disc and he is so positive on this that he's betting his career on it.

�If Kanye West sells more records than 50 Cent on September 11, I'll no longer write music. I'll write music and work with my other artists, but I won't put out any more solo albums.�

The two artists have colaborated in studio previously but their work is not scheduled to appear on any music CDs anytime soon.

50 Cent�s last full-length solo album, �The Massacre,� was the best-selling disc of 2005 and sold more than 1.14 million copies in its first week of release. The same year, West�s �Late Registration� opened by selling more than 860,000 copies in its first week.