Former Real Madrid coach Fabio Capello says Barcelona would be crazy to sell Lionel Messi.

Capello believes Barca cannot afford to lose the Argentine.

"I do not think that Barça should sell Messi, how can you sell Messi?

"I saw him on Sunday. He started badly in the first few minutes, he was on the wing, he didn't like it, then he woke up and produced a great match. Barça cannot sell a player like so."