An announcement on Chip Kelly's hiring is expected to come as soon as Sunday, sources have told CBS Sports.

ESPN reported earlier Wednesday that Florida and UCLA are the front-runners for Kelly's services. USA Today added that Arizona State could be in the mix if it opens.

One source involved in the process told CBS Sports that it wasn't certain where Kelly stood on his decision at this time.

Informed sources with knowledge of the situation shot down a report Wednesday that said "a large number of reliable sources ... indicated" that Kelly had chosen UCLA.

There is a certain amount of urgency on both sides -- Kelly and his future team -- to get a deal done quickly. Both would want to begin recruiting with the new early signing period only 28 days away.