On Sunday afternoon, PSG played Monaco in a match that might have been more eagerly awaited had PSG not already been 15 points clear at the top of the French league, with 10 games left to play. As always, PSG were favourites, while Monaco had won one of their last eight matches, a run that had seen them knocked out of the French Cup and the Europa League. Angry Monaco fans greeted their team with a banner draped over some empty seats: “Comme vous, on est en vacances!!!” (like you, we’re on holidays). But when Monaco’s players got down to poolside, they f …