"He is a player that needs a challenge and likes one. Our job is to push him to high levels," Ten Hag told a press conference after the 2-0 win. "He has high potential and we have to get the potential out and therefore you have to work day by day. It is only about him, if he can keep the focus and if he puts the right effort in, he keeps the focus, sometimes for young players it is difficult. We have their job to do."