Neymar has led the tributes to Juan Izquierdo after the Uruguayan footballer died at the age of 27.
The Nacional defender collapsed on the pitch during a Copa Libertadores round of 16 tie against Sao Paulo in Brazil last Thursday.
He was quickly attended by medics on the pitch and was taken to hospital after suffering a 'cardiac arrhythmia' - an anomaly of the heart's rhythm.
Nacional posted a statement on social media confirming Izquierdo's death and that it is felt 'in deep pain and impact in our hearts' and 'all Nacional is in grief for his irreplaceable loss.