If im not wrong, he said he doeSnt feel comfortable as rb. Could be wrong tho
It could be because he finds easier to dribble past opponents and do his trick from the left.
It could be like a cuadrado case. He is naturally right footed and in theory should be playing from the left... but it seems he find it better for him to play on the right because the way he dribbles etc
But if he is willing and sarri can make him play there, im all for it
I like him, but I'm always a bit annoyed to see a FB using primarily the opposite foot. Like many mentioned, he'd also be my first try as a RB if Cancelo leaves. He has some nice flair, and enough personality. Many Italian "youngsters" choke when they play for Juve (see Rugani), but I like this guys agression.