West Brom boss Tony Mowbray admits Dutch defender Gianni Zuiverloon is yet to be truly tested this season.

Mowbray told the Express & Star: "His game is clicking in and he sees the bigger picture at the moment. I am pleased for him, but there will be bigger tests along the line where we have to see how he reacts.

"After a poor day when Wayne Rooney gives him a hard time, or Cristiano Ronaldo turns him inside out. We will see how he reacts and that is the bigger picture some way down the line and a test of how good he can be.

"You try to identify talent and bring it in but what you don't really know about is his personality. You see his personality on the field but I didn't really know his personality around the building.

"We can see now he has a great desire to learn and he wants to please and do what you ask him to do. He is an asset-rich footballer with mobility, quick feet, great spring and good passing ability.

"He has the assets and if he can put them together he is a good player."