Messi broke down in last nightâ€™s Champions League stalemate against Benfica and was stretchered off. Initial reports suggest a 'bruised knee'.
"I do not know what it can be, but itâ€™s not nice to leave the field on a stretcher," lamented Zubi.
"The injury does seem minor."
Indeed, sources say Messi could be fit enough to make the weekend clash with Real Betis.