Barcelona captain Andres Iniesta has injured the lateral collateral ligament in his right knee. The 32-year-old star suffered the painful-looking injury during the first half of the Catalan side's 3-2 win against Valencia at the Mestalla.

Iniesta went down after a robust challenge from Enzo Perez and was seen calling for a stretcher immediately. After being attended to by medical staff for a number of minutes, Iniesta was taken from the pitch in tears and is now due to have further tests on his return to Barcelona.

"The first team player Andres Iniesta has injured the lateral collateral ligament in his right knee. When he arrives in Barcelona the player will have more tests to find out the exact extent of the injury," a statement from the club explained.

Perez's challenge on the Barcelona captain went unpunished by referee Undiano Mallenco. It did, however, prompt a furious reaction from Barcelona coach Luis Enrique.

Iniesta's knee problem adds to Barcelona's mounting list of injuries. Defenders Gerard Pique and Jordi Alba both sustained problems in their one-sided win against Manchester City in the Champions League on Wednesday (19 October), while Arda Turan and Rafinha suffered problems in training before the game against Valencia.

Next, Barcelona take on Granada in La Liga on 29 October and then face Pep Guardiola's City side at the Etihad on 1 November. As yet, there is no indication as to when Iniesta will be available to play.