FC Porto goalkeeper Iker Casillas, 37, has suffered a suspected heart-attack during training.

Casillas suffered a myocardial infarction also known as a heart attack, but was treated quickly and is not in immediate danger. He remains in hospital and is not expected to feature again for Porto in the remainder of their Primeira Liga season.

The former Real Madrid player is the most capped player in UEFA Champions League history with 177 appearances. Casillas also captained Spain to the 2010 World Cup title and holds the record for most appearances at 167.

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During his illustrious stay in Madrid, Casillas won La Liga five times while also claiming three Champions League trophies and two Copa del Rey crowns, racking up 725 total appearances for the club in the process.

In total, Casillas helped lead the club to 19 trophies during his time at Madrid and also holds the record for most appearances by a goalkeeper in the FIFPro World XI as well as the record for most ever appearances in the Champions League.

Casillas’ heroics also extended to his play with the national team, as he was a key piece during one of international football’s most successful eras with Spain.

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That Spanish team won three major trophies in a row, capturing the 2008 and 2012 Euros and the 2010 World Cup with Casillas starting in each of those finals.

Since joining Porto in 2015, Casillas has won two trophies, including a league crown in 2017-18, featuring 156 total times in nearly four full campaigns.