He said: "I think winning the Premier League is always a big achievement, I think it is one of the best leagues in the world. Forgive me Spanish and Italians but for me it is the best.
"I feel in this moment the Premier League is the best league in the world, improving year after year.
"It is a big achievement to win, like I think it's a big achievement for the teams at the bottom to survive and not be relegated. For people to achieve objectives in the Premier League, it is very difficult."