This has already been mentioned a couple places on this site, but I think the Titans should be the first team to put a call into him. There is no better way to make a young quarterback feel comfortable in the passing game than to give him a reliable, big play option at tight end.
Crumpler was banged up for most of the season and hampered by terrible quarterback play, but he was still able to put up 42 catches and 5 touchdowns. As long as he is healthy, there is no reason the Titans should not make a run at him. He would give the Titans a big play option that they desperately need.