There was a terrifying moment during an Atletico Madrid training session on Tuesday when on-loan striker Moussa Dembele collapsed while stretching.
Click through the gallery above to see some images of the distressing incident.
According to Sky Sports, the French forward, who joined Atleti from Olympique Lyon on loan in January, collapsed to the ground during the team's routine stretches on Tuesday afternoon.
Dembele appeared to lose consciousness before falling over, with his Los Rojiblancos colleagues quick to alert medical staff to the situation.
The former Fulham and Celtic forward was rolled on to his side, presumably to avoid the striker from swallowing his tongue, while some of his teammates ran to get a stretcher.
it is understood that Dembele regained consciousness a little more than a minute later and was able to get back on to his feet before he eventually walked off the field without help.
The 24-year-old was later seen making his way out of Atletico's training ground behind the wheel of his car, suggesting that his health is not in any immediate danger, but the Spanish club is yet to comment on the incident.