Ajax and Netherlands defender Daley Blind says he is “feeling fine” after collapsing during a pre-season friendly against Hertha Berlin.
Blind, 30, was diagnosed with a heart condition in December 2019 after suffering from dizziness during a Champions League game against Valencia.
He returned to action in February after having an implantable cardioverter defibrillator (ICD) fitted.
Blind posted on social media on Wednesday to thank people for support.
“Many thanks for all the kind messages I received. I can say that I’m OK and feeling fine,” he said on Twitter.
Ajax boss Erik Ten Hag said the former Manchester United player’s ICD “went off” during Tuesday’s match.
“He got subbed off straight away and he is feeling OK now, he is feeling fine,” Ten Hag told Dutch TV station Ziggo Sport.
“We will do research about this now.”
The Dutch club said the defender had visited the club’s training ground earlier on Wednesday.
“He [Daley Blind] will be examined further and await the results of these tests before resuming training.”