The 28-year-old believes his three seasons with Everton have turned him into 'a complete defender'.
He said: "Now I'm equipped to play against every striker. In England the football is fast and furious.
"I have played for Ajax, I have played for Atletico Madrid. But in England I learnt to deal with pressure and big games all season. There is not a single week where you can relax and think that you can take it easy.''