Thats exactly what we should have done, let him go for 500,000 or a million. He's an awful player let's be honest, he can barely even make it into the current United squad, never mind team and can't even displace a 34 years old winger at RB.
So it was obvious no club was ever going to pay any sort of decent fee for him. We should have let him move on last summer for whatever was offered and just got him off the wage bill. Over the last 2 years he's probably cost the club around £6-7m in wages and that could be close to £10m if he stays here another year.
I wonder if he could have done more himself to try to get out of United for the sake of his career. He can't be happy sitting in the stands month after month for years.