LONDON, May 14 (Reuters) - A season that began ⁠with Chelsea as FIFA Club World Cup winners has unravelled into poor form, managerial upheaval and fan protests, but redemption could ⁠still come in Saturday's FA Cup final against Manchester City.

For Chelsea, it is all or nothing as they try to shake ‌off the turmoil currently enveloping the west London club and win their first domestic trophy for eight years.