Four rumor reports touched Boston's roster over five days in September, rated between 40 and 75 in confidence, and two of the signing reports resolved before their status ever moved past open. The connecting thread is a payroll already a million dollars past the tax threshold, which caps what any of September's reports can still turn into this month.

The Fischer report on Carter was the strongest of the batch, and it held up.
Jake Fischer's September 11 note tying Boston to Devin Carter carried a confidence score of 75, the highest of the four reports here, and was marked confirmed. Three days later, Carter's name appeared on the roster — the outcome the report described, delivered on schedule.
Two signing reports carried modest scores and still turned into real moves.
Hoopsrumors rated its September 14 report that Carter would sign at 43 confidence; Paul Garcia's report the same day on Caleb Grill's training camp deal came in at 49. Both remain marked open in the tracking system, yet both transactions occurred — Carter is on the roster, and Grill signed before leaving it within two days.
The Hank Morgan report never amounted to more than paperwork.
Hoopsrumors' September 11 note on Boston signing and then waiving free agent Hank Morgan drew the lowest confidence of the set, 40, and it stays open. It describes a transaction that already happened and reversed itself the same day — the definition of a non-story dressed as one.
None of these reports describes a move the current payroll can absorb beyond the margins.
Boston's total payroll is $201.4 million, a million over the $200.4 million tax threshold. That leaves camp deals, waivers, and depth signings as the ceiling for what September's reports can produce — nothing here describes a trade framework, an extension figure, or a deal Boston could make without shedding money first.
Is Devin Carter actually on the Celtics' roster?
Yes. Jake Fischer's September 11 report on Boston's interest was confirmed at 75 confidence, and Carter joined the roster on September 14.
Did Caleb Grill sign with Boston?
He did, on a training camp deal reported September 14, but he left the roster two days later.
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Morning · Mon, Sep 14The Calendar Firms Up Before the Roster Does
Cap watch · Sun, Sep 13Above the Line, Below the Apron