This, to me, is the funnest situations. I loved playing with the Cardinals in last years Madden because of their horrible cap situation combined with players with high salary and low OVR (that became worth it when moved to DE). The Chiefs are also fun.
I don't think the Lions are a team you can "rebuild" because of all the young talent they already have on offense.
Although the Raiders (I think) have this guy named Chaz Schillens, 6'5 with 92 speed and good catching. Great receiver to build around