Ole Gunnar Solskjaer has told his Manchester United squad to get angry at each other ahead of matches that will serve as a barometer of how quickly they are improving.
The United interim manager has earmarked this weekend's trip to Tottenham and the FA Cup date with Arsenal as perfect gauges before the mouth-watering Champions League doubleheader against Paris Saint-Germain.
Solskjaer – who has taken his side on a warm-weather break to Dubai, stationed at the five-star One&Only Royal Mirage Arabian Court – encouraged squabbles in training to promote a winning mentality.