In addition to Vince Young, free agent QB Tyler Thigpen is also trying out for the Browns this week. The Browns are kicking the tires on some mobile quarterbacks as Kyle Shanahan installs his bootleg-heavy scheme. Thigpen was out of the league last season and served as Ryan Fitzpatrick's backup in Buffalo the two years before that. Young should be able to beat him out if there's only one roster spot to be had.