The San Francisco 49ers on Tuesday signed agent cornerback Perrish Cox to a two-year contract.

The Oklahoma State product played one NFL season, Denver's 2010 campaign, before being released by the Broncos following sexual assault charges filed against him in September 2010.

Cox was acquitted of the charges on March 2, 2012.

In 2010, Cox forced two fumbles, intercepted one pass, and posted 58 tackles in 15 games -- nine starts.