Why can't he play center? He's 6'10", and quick. He puts on 20 lbs and he's fine.
You guys make it out lke the guy is 30, he's a little kid, and I got news for ya, he ain't been a PF all his life, he's been a center.
Jack Armstrong says it best, there is only one position in the game, thats a "player". Davis seems like a player, wherever he plays he'll be just fine. His limit won't be set by his position.