Lennon does that too, though, without the added advantage of being so good on the ball. I guess my issue is having Lennon and Deulofeu in the same side. Lennon is absolutely useless on the left side (as we saw yesterday), but I think Deulofeu has the tools to be able to provide something great from there.
If we had Yarmolenko and Alexis in the squad, I'd absolutely say that Deulofeu should just stay on the right and work his magic from there, but right now the only wide threat we have on the left side is Mirallas, who also never looks as comfortable there (and is never available for more than a few matches at a time anyway). Given the squad we have right now, I think we could do worse than trying to get Deulofeu comfortable in another position.