Glasner's incredible two-and-a-half-year spell at Palace propelled supporters into dreamland, as they celebrated an FA Cup, Community Shield and most recently, a Europa Conference League triumph.
The Austrian ended his fairytale time at the club with a European trophy to cement his place in the Eagles' history books, and now he's heading for AC Milan.
Sage, meanwhile, has the difficult task of replicating or somehow eclipsing what Glasner achieved in South London after agreeing to become their new manager.
The 47-year-old, who won the French Cup with RC Lens and finished second in Ligue 1, is ready to challenge himself in the Premier League after signing a three-year contract.
Terms of his deal were agreed after Palace agreed a compensation package of up to 5 million to release him from his contract at Lens, according to talkSPORT's Alex Crook.
An official announcement is now on the horizon as Crystal Palace fans prepare for a new era, and one they hope will bring more trophy-winning success.