Cardiff City star Ross McCormack has backed his former team-mate Glenn Loovens to make an instant impact at Celtic Park.
"Glenn really is that good a player and I can understand why Celtic and Rangers wanted him so much," said the former Motherwell and Rangers striker.
"It was just his composure that stood out. He's like Boumsong when he was at Rangers. When the ball comes up hell bring it on his chest and pass it. He never panics and he's a mixture of maybe Boumsong and Kyrgiakos."
"I saw him for a couple of months, played with him a few times and trained with him. He'll do really well for Celtic â" I have no doubts about that at all."
