The Bills have signed 31-year old TE David Martin.  Martin did not play in any games last season as he was injured.  He has played in 101 games (43 starts) in his NFL career and he has caught 152 passes for 1,519 yards (10.0 avg) with 14 TD grabs.  This was a solid signing for the Bills who are thin at TE right now.  Martin is a solid receiver so Trent Edwards might be looking his way quite a bit in 2010.