Crystal Palace have already lost captain Marc Guehi in a £20m ($27.4m) move to Manchester City this month, while Glasner publicly announced that he will be departing the Eagles when his contract is up at the end of the season. Mateta’s announcement of his desire to leave completed a trio of heavy blows for the FA Cup holders in a turbulent January.
They have yet to bring in a replacement for Guehi but have signed Brennan Johnson in this window and have been linked with moves for Premier League forwards Jorgen Strand Larsen and Evann Guessand.
Glasner said on the club’s transfer work behind the scenes: “The club is working almost 24 hours a day right now. Marc [Guehi] left two weeks ago and nobody is in. You can imagine it is not so easy – every team wants to play a successful season, so it is not so easy that you can get the players at the end of January.
“I see the club working hard to get players in to replace Marc and, of course, we have to prepare if something happens with JP [Mateta].
“To be clear, it can be that Mateta stays, and he is a Palace player on 2 February, and it can be that Mateta has left the club and a new striker is in,” said Glasner. “These are the two situations we are talking about and discussing right now.”