Many Manchester United fans have been left fuming over a revelation from behind-the-scenes involving Ralf Rangnick.

As per The Daily Mail, the players are struggling to adjust to the manager's later training sessions, and were left out in the dark at 5pm on Tuesday.

This comes after Rangnick himself criticised their 'lack of physicality' in their 1-1 draw away to Newcastle United in the Premier League last time out, ahead of their game at home to Burnley tonight.

The Red Devils were also criticised earlier in the season under Ole Gunnar Solskjaer for their lack of running compared to other teams in the top flight, suggesting that they are not fit enough physically or are not working hard enough.

Nonetheless, it seems that the players seemingly complaining about the sessions is not doing themselves any favours in trying to win over the MUFC supporters.

Man Utd fans on Rangnick revelation

These Man Utd fans fumed as the revelation was shared on Twitter, with one even going as far as to claim that it was 'embarrassing':

"Wow and there’s me in my 9-5 desk job earning a fraction of what they earn in a week complaining. My heart bleeds…"

Credit: @EmmaHam41

"My 12-year-old's training session is 7:30pm till 9pm. Grow up!"

Credit: @samhain1

"Get rid of the lot of them"

Credit: @1Ahtishaam

"Embarrassing"

Credit: @redutd1999

"Sell EVERYONE"

Credit: @Brokefrienddev

"They're actually pathetic"

Credit: @mufc90

In other news, find out what transfer update has Red Devils talking here!