Manchester United may have lost their first competitive game under Jose Mourinho in the derby against Manchester City on Saturday but the contrasting mood in the camp compared to Louis van Gaal's reign remains startling.
Mourinho's arrival, as well as the additions of Zlatan Ibrahimovic and Paul Pogba have boosted morale within a Man United squad that, at times, appeared frustrated by the shackles of the Van Gaal's regime.
And, it appears one new rule the current boss implemented has proven a crucial factor in raising the spirits amongst United's stars this season.
According to the Manchester Evening News, Mourinho has made one major change to the players' training schedule which has been met with delight.
In the previous regimes of Van Gaal, David Moyes and even Sir Alex Ferguson, the manager reserved the right to call the players into training at a day's notice - usually after a poor performance or result on a match day.
However, Mourinho has scrapped that particular rule and players are now given fixed days off with plenty of notice to plan how they can spend their time away from the pitch.
Wayne Rooney and co. are believed to be 'chuffed' with the change and now have a bit more freedom to do as they please.
M.E.N continue by adding that the Portuguese boss doesn't feel anything productive can be achieved by dragging the players into training the day after a disappointing defeat.
Up until Saturday, Mourinho would not have needed to implement the old rule anyway as the Red Devils had picked up a maximum nine points from their opening three Premier League matches of the season.
But after the derby defeat, Mourinho is facing one of his biggest tests to date as Man United manager, with fans expecting a large reaction to losing to Pep Guardiola's side 2-1.
The first opportunity to rectify last weekend's mistakes will come in the Europa League clash against Feyenoord on Thursday, however, Mourinho was expected to rotate his squad for the trip to Holland regardless of the result against City.