It's worth offering him the full MLE - Varejao would be my favourite for the MLE if the C's could get him for it - but he'll likely turn it down for a slightly better contract with the Cavaliers.
I don't know that the Cavs will offer him that much as they will want to preserve their flexibility next season. Besides, they already have two Centers on the roster, why pay big money for a third?
I would be fine with Andy on the Cs, at a good price (eg: hard to complain if he gets a multiyear deal starting at $3M -- that's about right for a decent big man coming off the bench).