It's a comparable percentage of the cap that Bradley got in 2014 before the spike. In fact, it's slightly less.
With the cap going up the next few years, it seems likely this will be a good contract going forward. It's definitely not an albatross.
Yep, came here to say the same thing, but you beat me to it. This contract has more upside than downside.
Also, since the Celtics are now a tax team, or will wind up close to one if moves are made, I think it makes more sense to view contracts as a percentage of the tax than the cap, because that’s really the constraint the team is working with most years. The Celtics will be giving Smart, likely their 4th-6th man in minutes, a little under 9.5% of the tax every year. That doesn’t seem like a misallocation of resources.