He's never been a good QB. A 53.8 career completion percentage shows he doesn't have the accuracy. He always got more credit than he deserved. For example I mentioned last week all the credit he received when Atlanta defeated the Packers in Lambeau during the 2003 playoffs, but really the credit goes to his teammates on defense (for forcing 5 turnovers) and on special teams (for returning a blocked punt for a TD). Maybe his potential new team would consider him at another position, such as wide receiver, but there aren't any recent success stories I can think of when a college or NFL QB is moved to a new position.
Here's what the commish said:
"I accept that you are sincere when you say that you want to, and will, turn your life around, and that you intend to be a positive role model for others," Goodell said in his letter to Vick informing him of the reinstatement. "I am prepared to offer you that opportunity. Whether you succeed is entirely in your hands."
His crimes were awful, but he's done his time and been punished. However, another big problem remaining for whatever team might take a chance on him, besides the fact that he isn't that good, is that he lied about his involvement in the dogfighting ring. He lied to NFL commish Roger Goodell about it. He lied to Falcons' owner Arthur Blank about it. When can you start believing that he's telling the truth to you this time?