Arsenal fullback Nuno Tavares will become a world-class left-back, according to his Marseille boss Igor Tudor.
The Portuguese star, 22, is on loan in the French top flight after struggling in his first year at Arsenal.
And Igor Tudor said: "He's a good boy, professional, a bit shy off the pitch but not on the pitch.
"He is very young, he already has a lot of qualities. It can still grow on the decisions and the choices.
"He will then become one of the strongest in the world."