I love Rondo, and genuinely hope we find a way to keep him and build a contender around him.
That said, I begrudgingly admit that it might be better to find a way to trade him. He deserves to be contending now, in his prime, rather than at its tail end in a few years, and it would be a good way to pick up assets. It is unfortunate, because Rondo is a true Celtic, but I think in the long run it would be best to trade him.