Barcelona forward Sergio Aguero will have to undergo a full heart check after being diagnosed with arrhythmia, according to reports in Spain.
The Argentine striker - who joined on a free transfer from Manchester City in the summer - felt pain in his chest after jumping for the ball up against Alaves defender Victor Laguardia in the first half of their 1-1 draw on Saturday night.
The 33-year-old was taken straight to hospital in an ambulance to receive a medical check-up after being replaced by Philippe Coutinho three minutes before half-time.