he himself said even in the first season and the treble season he is working hard on the output, given the media had it on daily regarding his lower output at City compared to what we used to get from the wingers. he had a few interviews that he is practicing shooting, crossing to get his number higher up while acknowledging he has other skills too which were useful for us.
this was before he went a full year before scoring in PL.
I dont think Leicester, Soton, Wolves have a winger in their squad who can go a year without scoring. certainly not a 100m one.