Porto goalkeeper Iker Casillas has asked for time to recover in peace from his recent heart attack and will announce any retirement plans on his own terms.
Portuguese newspaper O Jogo reported on Friday that the former Real Madrid and Spain star is about to retire, while Porto president Pinto Da Costa said the club "would like him to stay at Porto in a different capacity".
Casillas responded in a post on Twitter in which he added that his recovery is going well, following a mild heart attack during a training session on 1 May.
He wrote: "Hi everyone. Retiring... the day will come when I have to retire. Please allow me to announce that decision when the moment arrives.
"But for now, I need peace. Yesterday I had a check-up with Dr Filipe Macedo. All good. That's the big news I want to share with all of you!"
Casillas, who will be 38 on Monday, joined Porto four years ago after 16 seasons and over 500 appearances for Real. He has won five Spanish league titles and one in Portugal, as well as two Copa del Rey and three Champions League titles with Real.
He won 167 caps for his country and was part of the team which won three major tournaments in succession, the 2008 and 2012 European Championships and 2010 World Cup.