Crystal Palace were extremely busy over the summer transfer window, with sales and exits aplenty. Oliver Glasner had to oversee a market that was volatile and ever-changing for the Eagles as they lost key stars. Michael Olise, Joachim Andersen, Jordan Ayew and Sam Johnstone were among those to leave Selhurst Park for new challenges. In their place came plenty of new options as Chadi Riad, Daichi Kamada, Ismaila Sarr, Eddie Nketiah, Maxence Lacroix, Trevoh Chalobah and Matt Turner moved to Copers Cope. While it underlined a transformation of the team at Crystal Palace, there was one area left e…