IMO, what he did last season was unreal and unreplicable.
It was a combination of inspiration + the higuain factor. He was not goIng to accept to get benched at any cost, so he did the unthinkable and adapted to a new role even when not having the physical frame for it, and he excelled at it with pure sheer will.
Now, i see that he doesnt have the same drive that made him so unique in that position. He is not bad, but he doesnt have that unreal workrate from last season...
It seems like he loweered a couple gears, being in his comfort zone already and seeing higuain not as a tread anymore, because he will be starter no matter what even with higuain being a starter
Or maybe age is getting him for that role. I mean, he is not old, but lets be honest... he has todo double the effort a normal winger woould do, since he has the body of a battling CF, but he is forced to play the position of a tireless speedster.