Some of the Manchester United squad are reportedly vexed by Ralf Rangnick's training methods and puzzled as to why his assistant Chris Armas leads most of the sessions.
Rangnick's appointment following the sacking of Ole Gunnar Solskjaer in November has not had the desired effect with the Red Devils still struggling for form.
The problems continue to mount and some stars are annoyed by the 'old-fashioned' training sessions, according to ESPN.
The report claims that a portion of the Red Devils squad are also perplexed with Rangnick taking a backseat behind his assistant Armas in terms of coaching.