Manchester United's 1-1 draw at home to Twente on Wednesday night drew boos from some supporters at Old Trafford.
The result means United have won just one of their last nine fixtures in European competition and has increased the pressure on Erik ten Hag after a mixed start to his third campaign at the club.
The Dutchman signed a one-year contract extension last summer following a post-season review led by minority owners INEOS.
But, before crucial fixtures against Tottenham Hotspur, Porto and Aston Villa, United fans are divided over whether to stick or twist with Ten Hag.