So just to add to the position thing about Bernie, on RW or Central midfielder.
For me, it is all situational.
If the opposition sits back and gives us the ball most of the time, Bernie is a fantastic option on the RW, because there is no need for a pacy RW if teams just sit back. We saw this when Pep benched Sane because he was making mistakes in small spaces while Sterling and Bernie had much tighter control on the wings.
In bigger games, where perhaps there is space behind for our wingers, then yes I think some pace on the wings is probably better, and in this case, we would want more control from the midfield and Bernie being central is probably the better option.
That being said, this means we play Mahrez RW and he isn't pacy either, so we don't have pace either way on that side.
So it's just situational for me.