There's a lot of positions they could/should address in the draft in some cases for depth - DT, Safety, CB and RB. Supposedly they're in on a DT from Jacksonville who isn't a big name but has some size and is decent against the run. They had some cap space but not a ton so if they signed someone like Welker I wonder what it means for Dumervil or other guys who may be moved.
Edit - I'm hoping Welker to Denver doesn't happen. I think he's going to get too much money for a slot receiver who is going to be 32 when the season starts.