Eddie Howe quit abruptly Newcastle United after a 4-1 loss to Bristol City, Sky Sports News said.
Sky aired his last interview soberly.
He directly talked about the Bruno Guimaraes signing before walking out right after.
Former player Jay Bothroyd warned sternly the club could face threat of relegation without Howe.
Sky Sports will live broadcast the top‑flight Scottish Premiership opener on Saturday.
Dundee United welcome Rangers at Tannadice.
Manager Jim Goodwin firmly said he wants to plant a flag there.
Dundee United coach Derek McInnes confirmed two United players are missing and several are questionable.
Rangers look forward to Thelo Aasgaard and Cammy Devlin to be available for the match.