Almost everything about the Celtics’ start to the season has been disappointing, but it hasn’t been all bad. Among the silver linings of the tumultuous start is the performance of Al Horford. It seemed like the Celtics trade of Kemba Walker was more about getting rid of his contract than it was about bringing Al Horford back to Boston. As it turns out, getting Horford back may have actually been an absolute steal. Now, Brad Stevens’ first big move as the team president is starting to be looked at a little differently.