If you're just trying to explain the reasons why you think he should leave, rather than reasons why you want him to leave, then fair enough. I still don't agree, mind you. Whatever you say about the Glazers, there hasn't been any evidence to suggest that they make any calls on whether players are performing to the required level or not. The only reason Berbatov would leave, in my mind, is if that's what either Ferguson or Berbatov himself wanted. I haven't seen much to suggest that's the case.
Perhaps SAF could be told that he needs to cut the wage bill somehow, that's the only way I could see the "money men" having any say. But seeing as we lost two players on 100k+ last summer, and we also have Scholes, Giggs and Neville who I imagine would all be on pretty decent money and are likely to drop off the payroll themselves in the next year or two, I don't think the wage bill is really calling out for major reductions.