DIEGO COSTA is not worried about a backlash from Brazil fans over choosing to play for Spain and turning his back on the hosts.

"So far it has been fine and people have treated me how I expected although it may not always be like that," said Costa. "I feel relaxed as I have the support of a lot of people who understand the situation."

Costa came through a fitness test against El Salvador last weekend after suffering recurring hamstring problems in the latter stages of the season. "I needed that game to get rid of the fear that I might suffer another injury," he admitted.