49ers sign UFL quarterback, but it’s not Daunte Culpepper

Josh McCown is San Francisco’s new No. 3 quarterback, according to Matt Maiocco of CSNBayArea.com. Last a member of the UFL’s Hartford Colonials, McCown has started 31 games in eight seasons in the NFL with four different teams.  He was last with the Panthers in the NFL from 2008-2009. The 49ers kicked the tires on Daunte…