Atletico Madrid newcomer Moussa Dembele fainted out due to a reduction in blood pressure.
He fainted after a training session on Tuesday. The incident happened at a preparation session including players who had not been called up for international duty.
The DirectoGol cameras caught Dembele keeling over. He then crashed to the ground midway through the exercise.
Before seeking care, the 24-year-old was moved to the rehab role.
The Frenchman was able to drive himself home later that day from the club’s training centre. He has since recovered.
Dembele has only been with Atletico for a few months, having joined on loan from Lyon with a January purchase option.