The ex-England and Middlesbrough boss said: "Casemiro couldn’t believe the detail and the tactical knowledge that he [Ten Hag] had. He [Casemiro] thought he had seen it all at Real Madrid. That’s what I valued in that first year at Twente. Erik helped me bed into the club.
"Erik’s a wonderful tactician. He can see things happening on the field that others can’t. Every one of those players will say they have learned so much. Don’t get me wrong, there has been a thousand meetings but they have learned from him. And so have I."