Luton Town captain Tom Lockyer remains in hospital "undergoing tests and scans" after collapsing during Saturday’s abandoned match at Bournemouth.
In a statement on their website, Luton said they understood "supporters are concerned" about the 29-year-old's condition but asked for his privacy to be respected.
They said that an update on the outcome of the medical tests would be provided in due course.
The club said: "Tom is still undergoing tests and scans, and is awaiting the results before the next steps for his recovery are determined.
Tom Lockyer collapsed during Luton's Premier League clash with Luton GETTY IMAGES"We are unable to provide a running commentary on his situation, and request that all media please wait for any updates to be released via the club’s official channels when the time is right.
"We all want the very best for Tom, his partner Taylor and the whole Lockyer family, and politely ask that his and their privacy is respected at this difficult time."
Paramedics and staff, including Luton manager Rob Edwards, immediately sprinted to Lockyer’s aid when he appeared to collapse near midfield in the second half.
Players left the pitch as the Wales defender was being treated but returned to applaud the crowd after the Premier League announced the match had been abandoned.
The clock paused in the 65th minute during what had been a 1-1 draw.
Lockyer had surgery to correct an atrial fibrillation in June after collapsing during Luton’s Sky Bet Championship play-off final win against Coventry.
He returned to action for the start of the new season.
Lockyer had made 15 appearances so far in all competitions before Saturday’s match.
