Well I think my comment was pretty self-explanatory. He needs to play in a more mature way, not so much rushing and going off-side and playing himself out of position etc.
I don't know. The reason Gio wasn't used well was that they forces us wide and they marked him down. Rushing with the ball ain't a bad thing given that you have someone to pass to or something clear to shoot at and for the offside, real madird clearly were playing on offside trap, it was just a matter of Gio not watching the opposing defenders.