Goalkeeper Casillas set to retire after heart attack - report

FILE PHOTO: Soccer Football - Champions League Quarter Final Second Leg - FC Porto v Liverpool - Estadio do Dragao, Porto, Portugal - April 17, 2019 FC Porto's Iker Casillas during the warm up before the match Action Images via Reuters/Andrew Boyers/File Photo

LISBON (Reuters) - Spain's World Cup-winning captain Iker Casillas is likely to announce the end of his goalkeeping career after suffering a heart attack on May 1, Portuguese sports newspaper O Jogo reported, citing the president of his club Porto.

Casillas, 37, would not confirm the decision, saying in a tweet that "a day will come when I will have to retire. Leave me to announce that news when the time comes."

Porto president Jorge Pinto da Costa Pinto told O Jogo that the Portuguese club was already looking for a new goalkeeper to replace Casillas, but he wanted to keep the Spaniard at the club with a yet unspecified role.

FILE PHOTO: Soccer Football - Champions League - Round of 16 Second Leg - FC Porto v AS Roma - Estadio do Dragao, Porto, Portugal - March 6, 2019 FC Porto's Iker Casillas during the match REUTERS/Pedro Nunes/File Photo

Porto did not respond to a request for comment.

Casillas added that he had a check up with his doctor on Thursday and that "all was well."

Casillas, who joined Porto in 2015, played 725 times for Real Madrid, winning three Champions Leagues and five La Liga titles. With Spain, he won the World Cup in 2010.

FILE PHOTO: Spanish soccer player Iker Casillas speaks to journalists before he leaves CUF Porto hospital accompanied by his wife Sara Carbonero in Porto, Portugal, May 6, 2019. REUTERS/Rafael Marchante/File Photo

Casillas was released from hospital on May 6 after suffering a heart attack in training.

(Reporting By Andrei Khalip; Editing by Andrew Cawthorne and Keith Weor)

FILE PHOTO: Soccer Football - Champions League Quarter Final Second Leg - FC Porto v Liverpool - Estadio do Dragao, Porto, Portugal - April 17, 2019 Liverpool's Sadio Mane celebrates scoring their first goal as FC Porto's Iker Casillas reacts Action Images via Reuters/Andrew Boyers/File Photo

FILE PHOTO: Soccer Football - La Liga Santander - Real Madrid v Villarreal - Santiago Bernabeu, Madrid, Spain - May 5, 2019 Real Madrid's Thibaut Courtois and Marcelo wear shirts in honour of former player Iker Casillas before the match REUTERS/Juan Medina/File Photo