Well.. BBD could fit - but how does that work out with JJ Hickson? I haven't exactly been following the Cavs this year, and I know they have been miserable, but I would still expect them to be rather high on him. Neither of those guys can effectively player center, something that Varejão indeed can. He might sometimes be listed as a PF, but the way he positions himself on the floor I'd more than anything call him a center.
I don't think it's even a question that Varejão would be an upgrade over Davis on the boards and as a defender, but in terms of offensive versatility I'm still sticking with Big Baby. He's shown time and time again this season that he can be a very good, and efficient offensive player, as long as he is not the 'go to guy' on the floor - I'm not sure Varejão will give us the same. As an offensive player he's more in the mold of Perkins.
I think Boston would take this, guaranteed that Varejão indeed returns soon - however, I don't see why Cleveland would take it, unless Varejão is growing unhappy, and they don't want to pay him. If that was the case, wouldn't they offer him for upgrades at the 1, 2 and 3, where they do not have intriguing prospects - And then 'rebuild' around Hickson and Varejão (or at least use them as pieces)?