Las Palmas are sweating on fitness of top scorer Kevin Prince Boateng for Sunday's La Liga showdown against title-chasing Barcelona at home.
The 30-year-old collided with Mateo Garcia at training on Wednesday.
As precautionary measure the two players did not continue the training and retired to the dressing room.
Boateng suffered a contusional incisive wound in his right tibia while Mateo García has needed a suture in his left knee.
He must pass a late fitness test for the huge game this weekend.