RFA preview: Niners have none this offseason

Posted by ESPN.com's Mike Sando

The 49ers have no potential restricted free agents this offseason.

Fullback Zak Keasey has appeared on some RFA lists, but he did not spend enough of the 2005 or 2006 seasons on active rosters to qualify as an RFA this offseason. We'll continue with a look at the Cardinals in the near future.