Yes, I have read, more than once, that Golovkin will fight Murray next, not 100%, but it appears to be true.........
Yes It's criminal that he's been sitting on his arse since the Martinez fight. A good promoter would have gotten him either another title fight OR a fight against a respectable opponent in preparation for another shot at a belt. Personally, I think a match against Andy Lee should have been his "comeback" fight after the Martinez loss. A well-respected boxer but who is easily beatable by someone of Murray's quality.