There's a sense of unpredictability surrounding the new Premier League campaign. And perhaps with good reason: nine of the 20 clubs will start the season with a manager appointed since the end of 2025/26 - the biggest summer reset of the Premier League era.

According to Opta, nine managers taking charge of their first league game for a club on the opening weekend is the most in an English top-flight season since 1946/47 - the first campaign after World War II.

Marco Rose (Bournemouth), Xabi Alonso (Chelsea), Pierre Sage (Crystal Palace), Alvaro Arbeloa (Fulham), Gary O'Neil (Ipswich Town), Andoni Iraola (Liverpool), Enzo Maresca (Manchester City), Matthias Jaissle (Newcastle) and Oliver Glasner (Nottingham Forest) will all take charge of their new clubs for the first time in the Premier League in the opening round of fixtures.

The clear outlier is Mikel Arteta. The Arsenal boss is now the Premier League's longest-serving current manager, having spent 2,432 days in charge by August 19. The upheaval is part of a longer-term trend towards shorter managerial reigns. Looking across completed tenures, the five-season rolling average now stands at just 1.9 years. That is the fourth-lowest level on record.

The extraordinary volume of change this summer has also left clubs entering the new campaign with historically little managerial continuity. Across the 20 clubs, managers have been in their current jobs for an average of just 474 days going into 2026/27 - the lowest opening-day figure of the Premier League era.