Iker Casillas' wife is hopeful the Porto goalkeeper will be discharged from hospital on Monday.
Casillas was hospitalised on Wednesday after being taken ill during a training session, and it was later confirmed that the former Real Madrid stalwart had suffered a myocardial infarction.
The 37-year-old took to social media to confirm that he was in a stable condition, tweeting: "Everything under control, a big fright but strong as ever."
And Casillas' wife Sara Carbonero told AS: "Iker is calm, it's very good.
"We have to stay a few more days in the hospital, maybe he will be discharged on Monday and we can go home."
57 - Iker Casillas has kept the most clean sheets among all keepers in the UEFA Champions League history (57). Ánimo. pic.twitter.com/3HeuwR0zQ7
— OptaJoao (@OptaJoao) May 1, 2019
Porto's squad were also due to visit Casillas on Friday, with coach Sergio Conceicao having told a news conference that his team were "extremely united" behind their goalkeeper.