Barcelona striker Sergio “Kun” Aguero announced on Wednesday that he would be retiring from football at the age of 33, after being recently diagnosed with a cardiac arrhythmia.

Barcelona striker Sergio Aguero has been diagnosed with a cardiac arrhythmia and will undergo more tests in hospital after being taken off during the team’s 1-1 draw with Alaves on Saturday at the Camp Nou. Aguero required treatment on the pitch five minutes before half-time but was then substituted and sent to hospital.

Having experienced discomfort in his chest during Barcelona’s 1-1 draw against Alaves in October, Aguero was diagnosed with a cardiac arrhythmia – or irregular heartbeat – and forced to announce his early retirement in December.