This is one of those things David Thrope could not possibly know, because they only people who do know would be Jaylen/Celtics Org and they probably don't even know what the future will be as of right now. And IF THEY DID KNOW they wouldn't be telling David Thorpe.
This is the same report we see every offseason, I can summarize it as follows:
"An unknown number of people without inside knowledge but connected to the NBA are speculating...."
And look, it's not worth nothing but take stuff like with a massive grain of salt.