The Detroit Free Press reports the Lions had "legitimate concerns" about whether free agent CB Chris Houston (toe surgery) would ever return to form before releasing him on Friday. Houston underwent "major" toe surgery in May -- his second operation of the offseason -- and reportedly has a degenerative condition in the foot. Per beat writer Dave Birkett, the Lions fear "Houston's career was essentially over." Houston's agent predictably stated Friday that Houston should "make a full recovery" and play football in 2014. The rest of the NFL will determine that.