The 76 year-old was due to speak at a scheduled press conference at 1.30pm to preview the Premier League game against Everton, but members of the media waiting outside the club’s New Beckenham training ground were informed the briefing would not take place.

According to reports, Palace is set to sack Hodgson, with ex-Eintracht Frankfurt boss Oliver Glasner a strong favourite to take the job.

An update from the club read: “Following news that Roy Hodgson was taken ill during today’s training session, we can confirm that he is now stable and is currently undergoing tests in hospital.

“Everybody at the club sends their best wishes to Roy for a speedy recovery.”

Palace is 15th in the top flight, five points above the relegation zone, ahead of the upcoming clash with third-from-bottom Everton.

Hodgson took charge of his 200th match as Eagles manager this week when his side was beaten 3-1 at Selhurst Park by Chelsea.

The former England boss is in his second spell in charge of the south London club, having returned for the final 10 games of last season when he signed a short-term deal to take over from the sacked Patrick Vieira.

He guided the club to an 11th-placed finish before agreeing to continue as manager for the 2023-2024 campaign.

Palace has won just six of 24 league fixtures this season, with only three of those victories coming since a 1-0 success at Manchester United in September.

Disgruntled fans have displayed banners in recent weeks calling for Hodgson to be sacked and vented frustration with how the club is being run.

Austrian Glasner guided Frankfurt to Europa League glory in 2022 after a penalty shoot-out victory over Rangers in Seville.

The 49 year-old, who has also managed Wolfsburg, has been out of work since leaving the Bundesliga side last summer.