Finally, Arsenal could breathe.With the Premier League title secured earlier in the week after Manchester City dropped points in their 1-1 draw with Bournemouth, Arsenal’s final league game — an away trip to Crystal Palace — was little more than a pressure-free, administrative box-ticking exercise. And, of course, a wild celebration.Mikel Arteta’s side won 2-1, but the result was irrelevant. This was about the cathartic euphoria of lifting a trophy – a simple action 22 years in the making. Beyond that emotional release, the game provided Arsenal a rare chance to take a literal breath and give their weary bodies a much-deserved rest.Arteta made nine changes, the most he has made for a Premier League game across the past five seasons.The recharge is timely.This Saturday, the Gunners face Paris Saint-Germain in the Champions League final. And PSG are among the most well-rested squads in Europe. They finished their league campaign a week earlier than Arsenal, courtesy of Ligue 1’s shorter 34-game campaign, and have also rotated heavily across the season.A glance at the graphic below shows that Luis Enrique made at least two changes between every league match, a level of rotation matched only by Serie A side Bologna across Europe’s top five leagues.“Rest is also an integral part of preparation, especially when we’re playing matches like these,” said Enrique at PSG’s Champions league media day this week.That approach is reflected in their squad management. Using The Athletic’s squad stability rating, which measures how each club distributes minutes between starters and substitutes across a league season, PSG rank third-lowest in Europe.Arsenal’s squad use, by contrast, sits firmly in the middle of the pack. For Arteta, PSG’s freedom to chop and change so freely is a luxury that teams competing for Premier League titles cannot afford.After PSG beat Bayern 5-4 in the first leg of the Champions League semi-final, Arteta felt that the freshness of both teams helped produce the thrilling attacking football on show, a freshness made possible by their dominance in their respective domestic leagues.