Let's use the 49ers example again:
Michael Crabtree -> Anquan Boldin (2013 offseason trade)
Patrick Willis -> Navorro Bowman
Vernon Davis -> Vance McDonald (2013 2nd round pick)
Aldon Smith -> Tank Carradine (2013 2nd round pick) and Corey Lemonier (2013 3rd round pick)
Mario Manningham -> Not much
Ian Williams -> Glenn Dorsey (2013 offseason signing)
Chris Culliver -> Eric Wright (2013 offseason signing)
Nnamdi Asomugha -> Tramaine Brock (
http://is.gd/sCJHVE)
Look at all of those 2013 offseason moves that ended up paying dividends immediately. It's almost as if they understand that football is a violent game, and that you can't expect every player to stay healthy all year. And since there's no way of knowing which player is going to go down, you need to have depth at every position. Some teams get this. Lately, the Patriots haven't.