This player needs to make some decisons about himself.. otherwise he may become another Adam Lallana, Wiltshire, Dele Ali... great, talented young players who simply couldn't sustain, or make that step up.
Sancho is playing Div One quality football at the moment, and he is lucky to have such a good coach right now. I do not see what he brings to the team, at all. He seems quite uncertain about his own game... as I have previously asked, what type of player is he? I watched him yesterday and he seems so hesitant about his own game. Antony also has this problem, although he seems (just...) seems to be working on this. They both have to.. people have seen through the hype, transfer fees, International Caps. Sancho has to step up and get us through the last couple of months of the season... he is good enough to do that.
You know what I would do? I would play him No 9 (if Martial injures himself for example..). Sancho may not like it, but that role means that he has to play more instinctively, and benefit the team.. become more direct... look at Rashford, Garnacho, Bruno, Ericksen, Martinez, Casimero.. all very, very clear about their games.
Sancho needs to define his game. He'll get left behind if he doesn't.