Kanye West to Jay Z: Hurry Up with My Prenup!

Kanye West and Kim Kardashian can't get married just yet ... and the reason is all about Jay Z.

Sources connected with the soon-to-be husband and wife tell TMZ ... they won't get married until the prenup is signed, and the snag has been a slow down because Kanye just dumped his old management and signed on with Jay Z's Roc Nation. We're told the people at Roc needed to get up to speed and thus the delay.

Our sources say Kanye and Kim are not fighting over the prenup, and we're told it will be signed within a week -- but not much before, because Kanye is out of the country. We're told the nuptials will take place May 24 in Paris.

There are reports Jay Z will be the best man, but we're told that's not true. He's invited and he may be the best businessman, but not the best man.