Barcelona ace Lionel Messi has picked up an ankle injury in the 2-1 Champions League win at Dinamo Kiev and is a major doubt for Saturday's Liga game with Espanyol. The Spanish champions said that the 22-year-old Argentine suffered a sprain ankle, following a fierce tackle by Dinamo's Leandro Almeida. Messi's injury came shortly after he had sealed the win for Barca with a superb freekick in the 86th minute. With just three days ahead of the weekend's Liga action, the livewire forward may well miss El Derbi Barceloni. After facing Espanyol at Nou Camp, Barca will fly to the Emirates to take part in the 2009 FIFA Club World Cup in Abou Dhabi.