Not only the Celtics...Sixers and Pacers too IMO.Raptors will still have both Ibaka and Lowry on the cap next summer, so it's two years from now we're talking about when they'll rid themselves of those contracts.
Are the Raptors better than the Celtics in the East next year? I don't see it. Let alone the two obvious Western teams (although we'll see about Houston, they lost too much defensively).