I'm not sure TBH, but knowing that he's fast and got stamina, we might need someone like him in such a formation like 4-3-3. But still I'm not sure, and it would be risky if you ask me.
Alan, no doubt
Andy, I don't mind the 4-4-2 as long as it's an interesting one with some nice tactics, not long balls zlatanistas style aka crapello.
There's the 4-4-2 Mourinho and 4-4-2 Crapello, I'll go with Mourinho.