The player has a sprained medial collateral ligament of the ankle.
After testing this morning at Leo Messi has been confirmed the diagnosis that the doctors of Barcelona made a first exploration. The player has a sprained medial collateral ligament of the ankle and lower estimated period is fifteen days.

The Argentine striker was subjected to various tests for 50 minutes at the Hospital de Barcelona to confirm the real extent of his injury after the last entry Ujfalusi in the match against Atletico Madrid.
Messi will miss at least the next two league games against Sporting Gijon on Wednesday at the Camp Nou and against Athletic Bilbao at San Mames, next Saturday. In addition, almost certainly, can not be measured at Rubin Kazan for in-Champions-although they do in determining the presence or not in the cold lands of Siberia.
Meanwhile, Argentina's national team will do everything possible to travel forward with them to Japan, where they will meet on 8 October at the Nipponese, because if Messi does not play, the Japan Football Association will pay 200,000 euros less to the Federation Argentina .