Some Palace fans will be left scratching their head

[Getty Images] "Legacy ruined", "stunned" and a "soap opera". These are just some of the thoughts on social media from Crystal Palace fans reacting to the news that the club's greatest ever manager, Oliver Glasner, is set to join newly adopted rivals Nottingham Forest . Glasner left the Eagles once his contract expired after a historic two and half seasons at the south London club in which he led them to FA Cup glory, into Europe for the first time in the club's history, won the Community Shield, and finished that first campaign in Europe by winning the Conference League. The Austrian was serenaded out of Selhurst Park on the final day of the Premier League season, with the three trophies he won during his time in charge the lasting reminder of the great things he achieved at the club. Glasner's passion is what endeared him to the fans and, despite the rocky periods, there were still those occasions when his name was sung. His man-management also kept the players engaged and midfielder Adam Wharton said "he has got to be one of the best managers Crystal Palace have ever had". And when Glasner announced his departure, no supporter would begrudge the manager who had changed the trajectory of the club a lucrative move. Glasner had been linked to some of the top jobs in football and could even joke with chairman Steve Parish in his final speech on the Selhurst Park pitch saying: "Now I'm leaving, I don't have to agree with the chairman." But, with a number of the traditional big jobs not available, Glasner's options seemed to be limited and Forest made contact with him earlier this summer. Palace did hold discussions with Glasner about extending his time at Selhurst Park, but an agreement could not be reached and now he is set to become Forest's fifth manager in less than 12 months. Most supporters would not mind where the Austrian ended up, but going to a club which could be perceived to have actively damaged the work he was doing at the Eagles will leave some scratching their head. Read more about the possible fallout from Glasner's Forest move