The team were booed off the pitch following the defeat by Bournemouth – their third straight Premier League loss.
“Maybe it’s time to accept that the ‘head coach’ role simply doesn’t work at NUFC and accept that a manager is required, a person who will not only coach but motivate and manage,” continued the NUFC Fans’ Forum letter.
“We must urge you to review our position and initiate any changes that you see fit to correct the current attitude of the playing staff.
“It’s time for action, it’s time for accountability.”
Fans use figures to highlight Magpies’ plight
The supporters’ statement also included a number of statistics to illustrate their team’s failings under McClaren:
Newcastle have only won six games this season – their joint worst number after 28 matches, only equalled by their relegation season in 2008-09;
They have the second worst goal difference in the Premier League, only better than bottom club Aston Villa;
The team have scored just 28 goals – the “worst figure in recent history” for this stage of the season;
Newcastle have kept only one clean sheet since 6 December;
The Magpies have the third worst disciplinary record in the Premier League.