Porto ace Ricardo Quaresma has hit out at Barcelona for the way he was treated at the Nou Camp.

"They disappointed me alot at Barcelona. It's very difficult for anyone to motivate themselves at those moments, but luckily I am no unhappy," said Quaresma when discussing his time at Barca as a 19 year-old.

"I had to look myself in the mirror and ask whether I really wanted to play football.

"I was only young, but I had to confront this injustice and overcome it."