We still don't know our best formation because Rabiot, Ramsey and Costa are never available so if all were fit we'd probably play 4-3-3 in which case a winger would be more useful. Sarri has always said balance is the problem which is why he can't play 4-3-3 or in other words, people like Berna aren't reliable enough for us to play 4-3-3 more regularly. The other thing is that Cuadrado would be great on the wing but because Danilo is mediocre, we don't really have that option either so do we get another right back?