have you considered wages though, doesent he earn 8M net at Bayern? also, he had a contract here until 2016 (his original contract from 2011 when he joined), then was rumored to Manchester half the summer in 2014, then few months later signs a (just) one year extension until 2017, and is sold the following summer, on a discount seemingly. few things i can conclude from this:
-there was truth to the Manchester links
-he signed a 1 year extension because we agreed to sell him the summer after
taking that into consideration, i think there is no way he would have stayed beyond 2015 here. also, id take him back still, but if hes willing to take less wages than Pjanic, which i doubt. otherwise he can rot at Bayerns bench for all i care