IMO, you're only trading Jaylen Brown as part of a deal for a superstar. Otherwise, you're trading for lesser players. Makes no sense.
Regardless, I think everyone wanting the Celtics to make a big deal are going to be disappointed. We might see a Thompson or TL deal or maybe even Smart sent somewhere for a true PG, but I believe the Celts have their eye on the '22 free agent market, not the '21 trade market.