"Mason is a big-talented player that we had from our academy," the midfielder told
Sky Sports . "He can go to the highest level, world class, it just depends on him.
"He has to work hard, harder than everyone, believe in himself and want it. When you're talented like this, you already have talent, now it's only the work you put in to make you become the world-class player you have to become with this talent.
"It depends on him. I will always be the guy to push him, not praise him too much, but push him to get to the level he should arrive at.