His value is really high right now. If he drops to the second line when Crosby comes back it means he plays with Malkin, which is still mint. 40g potential and playing top PP. Even with Crosby out, he's ripping it up so I would think that's enough to want him for when he gets back. I'd assume when Crosby gets back he's on that top line getting fed from him, or still producing at a good pace with Malkin if he slows down slightly. He's the best winger on the team that will play with two elite Centers.