In a dramatic press conference on Saturday (AEDT), Glasner not only announced that he will not be staying on beyond the end of the campaign, but also confirmed that Marc Guehi is in the process of finalising a transfer to Manchester City.

Glasner also revealed that striker Jean-Philippe Mateta, who has thrived under his tutelage, is free to leave Palace this transfer window.

The Austrian, who led Palace to FA Cup glory last season, revealed he informed the club's chairman, Steve Parish, in October that he "wanted a new challenge".

Glasner said: "A decision has already been taken, months ago. I had a meeting with Steve in October, [during] the international break.

"We had a very long talk, and I told him I will not sign a new contract.

"We agreed at the time it was best to keep it between us. It's best that we could do that and keep it confidential for three months. I told the team today, because I think now it's important to have clarity.

"We had a very busy schedule so that's why we didn't want to talk about it. Steve and I want the best for Crystal Palace."

Glasner stressed that his decision had nothing to do with Palace electing to sell England defender Guehi.

His goal now is on winning more silverware before heading off to pastures new, with Manchester United among the club's linked with the former Eintracht Frankfurt coach.

"I told Steve I'm just looking for a new challenge. I told him in October, it's nothing to do with the transfer window," Glasner added.

"I hate if something is written or said that is not true, and it was very tough for me not to respond. We have a great relationship, and we're always talking about what is best for Crystal Palace.

"I haven't spoken to any other club, I told the players that and promised them today I will give my best to give the best season in Crystal Palace history.

"We had a meeting as normal – players are a little surprised. 

"I told them we sold Michael Olise, and it was the best season in Palace's history. We lost Eze, and we are right now four points better than last year.

"We could always cope with the situation and we will show. It is up to us to show we can cope with this situation, again."

"We will do everything to bring another trophy back to Selhurst Park.

"We had the [UEFA] Conference League draw today, we will play Zrinjski Mostar from Bosnia in the play-off draw and I had a look at the draw tree, it'll be quite interesting who we could play in our section.

"I will do everything to help bring a trophy back to Selhurst Park."

Palace, which was knocked out of the FA Cup by sixth-tier Macclesfield last weekend, travels to Sunderland in the Premier League on Sunday (AEDT).

Guehi, whose contract at Selhurst Park also expires in the summer, has reportedly put pen to paper on a long-term contract with City.

The 25-year-old England international was the subject of interest for many top European clubs ahead of the 2025-2026 season, with Liverpool close to striking a deal with Palace.

However, a move collapsed at the final hour and although the Reds were reportedly keen on a January move, they have not followed through.

That has allowed Guehi to join Pep Guardiola's ranks, with City out for reinforcements in defence after Josko Gvardiol and Ruben Dias sustained injuries earlier this month.

"Latest understanding, the deal with Marc is in the final stages. We can't confirm, but it is not done. The result is Marc doesn't play tomorrow for us," Glasner said.

"When the players want to move on, a deal will happen. It looks like it has happened now. Everyone wanted Marc [Guehi] to stay forever.

"I talked to him, of course, it stays between us. Marc showed it in the summer, shown it the whole autumn that he was 100 per cent committed to the team and to Palace.

"I wish him all the best for the rest of his career. He is still at the beginning of his great career. He is a fantastic guy."

City manager Guardiola was asked about the club's interest in Guehi during his news conference on Saturday (AEDT), but the Spaniard shut down the question with a firm "nothing to say".

"Without John [Stones], Ruben [Dias], Josko [Gvardiol] we are in a difficult situation for a long, long period," Guardiola added on his team's defensive issues. 

"Ruben will be back soon. Josko, no. John, hopefully we will see."