Steve McClaren has blasted players who fail to contribute to a positive energy at a football club, insisting a negative body language and attitude are detrimental to a winning mentality.
Having been part of Manchester United's treble winning success as Sir Alex Ferguson's assistant in 1999, the former England boss is now back at Old Trafford as the No 2 to new manager Erik ten Hag.
Manchester United struggled last season first under Ole Gunnar Solskjaer and then under interim boss Ralf Rangnick as the early season title contenders slumped over the line to only seal a Europa League spot in sixth place on the final day of a chaotic campaign.