The offseason is far from over and there are still some major events likely to occur over the summer. Dame Lillard and James Harden are not-so-patiently awaiting trades. That’s probably keeping some other minor deals on hold. More locally Jaylen Brown will likely sign the largest contract in NBA history (we think? soon-ish? eventually?).
With all that said, we’re also past the draft and the bulk of free agency. The most likely thing the Celtics will do is to add another veteran at the minimum and sign a few more guys on non-guaranteed training camp deals.