Actually, he cannot play until Roger Goodell reinstates him. The Atlanta Falcons still hold rights to him and they would need to either work a deal (which it is understood they have an agreement) to release him or trade him.
Goodell says he is looking for true remorse for what he did...which is likely the reason that Vick is seeking out the Humane Society and PETA.
Michael Vick has been conditionally reinstated
NEW YORK (AP) - Michael Vick has been conditionally reinstated by NFL commissioner Roger Goodell. Vick can participate without delay in preseason practices, workouts and meetings and can play in the final two preseason games - if he can find a team that will sign him. Once the season begins, Vick may participate in all team activities other than games, but could play as soon as October. Goodell called a news conference for late Monday afternoon. Ref. USAToday
I have no problem with him playing football again.
He went to jail, paid the price of his bad decisions, and should be allowed to pursue his career. I suppose I might think differently if the offense was against a person rather then an animal.