Sevilla defender Sergio Sanchez is set to undergo heart surgery in Germany.
Sanchez has not played since and after consulting a heart specialist in Hamburg he has decided to undergo a "complicated" operation in the near future.
Sanchez said on his club's website: "Dr Sievers has explained the risks involved in having such an important operation, because it's a complicated surgery, but he made it clear that the risks are few compared to the possible benefits that could come about if I have the operation.
"There is a good chance that I could be able to continue my career as a footballer if everything goes how we want."
In 2007, Sevilla's midfielder Antonio Puerta died after collapsing on the pitch due to a cardiac arrest.