This is a million dollar question. The leak is: "The Buffalo Sabres have been holding internal discussions about replacing general manager Kevyn Adams, three NHL sources have told The Athletic."
The Sabres Executive organization is Terry Pegula, COO Peter Guelli, Sr VP of Business Ops Rob Minter, and CCO Jacob Vernon. You could possibly add Kim Pegula and/or maybe Laura Pegula. maybe.
The Hockey Operations is lead by Adams so I doubt he is in the room, but this the Buffalo Sabres. The Sr Advisor is Jarmo and they have never said who he reports to. I will assume it is Terry. All others report to Adams - Stahl, Karmanos, Jakubowski, Forton, etc., ... so I would not think they are involved in this decision. Then there is the head coach and I have never seen anything saying that the HC report to Adams or Terry. The football coach reports direct to Terry so it is possible that Lindy does.
So Monday "they" get Terry, together finalize the plan and the comms for it.