It's a lot easier for Perk to fit into OKC's system than it is for 5 guys to fit into the Celtics system.
Still too early to "revisit". Perk just needs to show up, get some rebounds and play defense on a team not known for defense. Big deal... he got 9 rebounds while his teammates shot 57% from three against the Wizards. Get the parade ready.
Right now the Celtics are trying to get 5 guys caught up with a system that is notoriously hard to pick up (we've seen several players struggle early with it), a defensive system where mistakes aren't an option and an offense highlighted by 4 all-stars. Right now not only are the new guys struggling to learn, the remaining regulars are struggling to learn the new guys.
Give it time. The Thunder aint going anywhere this year. I see them shopping Perk in two years.