"We saw how important he can be, how much energy he has, how good a tackler he is both for Poland at Euro 2016 and for Sevilla. Last season might have put people off, but they should remember how good he was."
He added: "He is not the creative mind of a team, but he is a great destroyer whose energy can transmit to other players. He has always been a top pro and a leader for the national team. I'm sure it will be the same for West Brom."