The Texans have signed Fletcher to a 2 year, $2.3 million dollar contract.  He played in 13 games last season for the Detroit Lions and he made 37 tackles, had 3 interceptions (he returned 1 of them for a TD), defensed 3 passes and recovered a fumble.  The Texans have needed a playmaker in the defensive secondary for a long time and Fletcher could be that guy.