Well I agree he is not the best. But he is amongst the best wingers in the league. He is quick and can change direction at will. He can cross the ball well and can shoot - has a deadly left foot.
A year ago, he was playing the Championship for Boro but now he is playing in the PL and is a regular for England. He has made massive improvements to his game. Mancini is so dumb to not use him in more games. They look more dangerous of making something happen with him in the lineup.
Your point...?