I dont know why he cant. Maybe because OAK wont be as miserable a team as StL was, and he wont be on the field quite as much???
I want McClain, and if things go as planned I'll basically have the first 3 picks of a keeper league, Mathews, Best and McClain, unless someone cuts a good proven RB, with the goal of being a strong team in 2011(if they play football in 2011).
I loved the game films of him, and when the steelers showed some interest, they say he was the most NFL ready LB. I expect slightly lower than Patrick Willis tackle numbers. Who knows about the big plays, INTs, TDs, etc.