The 37-year-old goalkeeper is now in Porto, and it was after a workout with the team on Wednesday as he was taken to hospital, reports the Portuguese public service channel.
the RTP write that it was found that he had a heart attack, but now he is out of danger. He is not believed to play more for Porto this season.
Casillas is one of the last two decades, the most successful goalkeepers. He won the euro 2008, world CUP 2010 and euro 2012 with the Spanish national team, and has won the Champions League three times and the Spanish league five times with Real Madrid.
the Article is updated.