10. Tim Cahill
SIMON DAWSON/AP/Press Association ImagesThis is a tricky one as an argument can be made that both parties were upset by the Aussies departure. Cahill's mesmeric performances at this year's World Cup demonstrate how much he could still offer at Everton. Conversely, Timmy would rather be lighting up the Premier League than MLS. Cahill's departure in 2012 was a poignant one. 56 goals in 226 appearances, including some crackers against Liverpool, bring back tears of emotion to even the manliest Evertonian. The leap of a salmon and heading that could place you in A&E for a week were just two of Cahill's strongest assets. 32 when he left Everton, both parties will feel slightly aggrieved his tenure wasn't extended a little more.