It follows the new takeover of the club.
Newcastle boss Steve Bruce has left the club by mutual consent.
He goes with the team second from bottom in the Premier League, having failed to win any of their eight top flight games this season.
There was speculation Bruce would be sacked following the Saudi-backed takeover of Newcastle earlier this month.
But he remained in charge for his 1000th game in management in Sunday's defeat to Tottenham.

Wales Stun All Blacks To End 73-Year Wait For Victory
Ireland Face Must-Win Kosovo Clash After Narrow Defeat To Austria
Kildare Trio Feature As Ireland Overcome Fiji In Nations Championship
Kildare's Sean O'Haire Kicks Dramatic Last-Minute Winner In American College Football
Sunday Morning Sports Update
Milltown Through To Leinster Intermediate Semi-Finals After Victory Over Meath Champions
Sarsfields Leinster Championship Campaign Ends After Heavy Defeat To Cuala
More Than 20 Horses Withdrawn At Cheltenham Over Ground Conditions