Zander Diamond faces an uncertain future after Hearts dropped their interest in the former Aberdeen vice-captain. The big-spending Edinburgh club have made Mehdi Taouil their fourth signing of the close season but Diamond’s proposed move has collapsed.Diamond was not offered a new deal at Pittodrie after the centre back made it clear he wished to move on.Dons boss Craig Brown confirmed there is no way back to Pittodrie for Diamond, saying: “Zander won’t be coming back to Aberdeen.” It is an ignominious end to what was once a hugely promising Dons career for Diamond. The defender shone in Aberdeen's Under-19s, earning him a regular first-team berth while still in his teens. His full-on, fearless style quickly made him a fans' favourite, but this started to turn sour in the last couple of years of his time at AFC. Photographs of Diamond in Celtic gear with a Celtic cake circulated the internet following a birthday celebration angered a section of the Reds' support. And Dons fans who turned a blind eye to that were less able to forgive an appalling loss of form under Mark McGhee's management at a time when defensive leadership was sorely required. Now Diamond's agent has a job on finding his client a reasonable level of club to play for this summer.