The Belgian lauded the Scot as one of the Premier League's best defenders before conceding Liverpool deserved to win the Champions League final Madrid.
He said, "He's been unbelievable this season. He's probably one of the best left-backs in Europe at the moment.
"He played a great final and did so well in the Premier League. All those assists and his overall contribution, he's a great player.
"It's not about revenge for me but he played well in the final, Liverpool did well and if you win the Champions League you deserve to win but it will be a different game on Tuesday."