Rangers captain James Tavernier could well be set to leave Ibrox this summer after nine years at the club. News that Turkish Super Lig side Trabzonspor have put forward a ‘formal proposal’ for Tavernier has sent Rangers fans scrambling. The Rangers support know that the club will need to sell in order to raise funds this transfer window but many will have been blindsided by what looks like an imminent exit for the club’s captain. A leading Turkish journalist has even claimed that Tavernier has already accepted Trabzonspor’s proposal with Rangers and the Turks not so far apart in terms of valua…