After a humiliating FA Cup defeat by non-league Macclesfield last weekend, Crystal Palace fans would have been forgiven for thinking their season couldn't get much worse. But Friday's news that captain Marc Guehi would be joining Manchester City for £20m and manager Oliver Glasner confirming he would be leaving the club at the end of the season provided proof that it could. If Palace fans thought Glasner - who last season masterminded the club's first FA Cup triumph - would enjoy his final