Barcelona's centre-back Ronald Araujo had been loaded into an ambulance on the pitch after suffering a concussion at the Camp Nou following a horror collision with his team-mate Gavi.The pair collided in the air, and Araujo was able to keep running after the head collision. However, after jogging back to his defensive position, the centre-back fell to the floor in worrying scenes.Play was stopped as soon as Araujo fell to the ground, and it didn't resume for another eight minutes as the defender received treatment on the pitch before being moved into an ambulance.