City manager Pep Guardiola was asked about the club’s interest in Guehi during his news conference on Friday, but the Spaniard shut down the question with a firm “nothing to say”.
Meanwhile, Glasner said: “My understanding is the deal with Marc is in the final stages.”
The Austrian then added Guehi would not be in the squad to face Sunderland in the Premier League on Saturday.
Earlier this month, Glasner said the Eagles would sell Guehi in January if their asking price was met.
Guehi captained Palace to their first major trophy in the FA Cup final against City in May, plus a Community Shield win over Liverpool at the start of this season.
He looked set to join Arne Slot’s side on 1 September but the £35m deal fell through in the final hours of transfer deadline day, with Guehi having already started a medical.
Guehi became an England regular after joining Palace from Chelsea in 2021, and was a key player in the Three Lions’ run to the Euro 2024 final.
Croatia international Gvardiol, 23, recently had surgery after breaking his shinbone in the 1-1 draw with Chelsea, while Portugal centre-back Dias, 28, is out for about four to six weeks with a hamstring injury.
City face derby rivals Manchester United at Old Trafford in the Premier League on Saturday.