Possibilities:

I want out of Philly?

I'm retiring after this year?

I'm retiring after the 2008 season?

I don't know. But I can't see the Eagles doing this if they were expecting McNabb to play out his contract.

From what I read on him, he has the ability to become a starter. but not as a rookie. He'll need another year in the weight room, and a lot of work on technique. But he can see the whole field and make all of the throws. He's a very good short passer, but a so-so long passer. He hits his receivers in stride. So they will get more yards after the catch with him than they will ever get with McNabb. He's mobile, but he's no a dangerous runner. He looks like a good WCO QB. And apparently, the Eagles feel they will need one sooner than we thought.