"European games have been meat and drink for him, but he has found it hard in the Premier League," he said.
"Seba is like Eric Cantona; he will risk a pass to win a game," he said. "Sometimes it makes him look careless, but he's not lackadaisical. He always wants the ball and he's got great stamina. The money we paid is a lot but I ask myself whether he is contributing, and I think he is."