I think he would, make us a far better attacking on our right handside. Let's say you're in the camp of getting Sancho back, he would allow him to attack in the "half spaces" because he'll be bombing on past him constantly. Heck, it should even make Antony better too, if such a thing is possible. He could do both, but you'd need a disciplined right hand side in CM and CB to cover his space he leaves in behind. You can set the whole team up like that in a back 3 to give him full license to roam or make sure the team know they have to be wary of that space being left in order to attack better.
He is, from an attacking sense. He gets round his winger and covers the whole flank. You wouldn't want him if you're going to sit deep. Also I still expect Dalot to be first choice, he is just a good option.