Liam Rosenior's time at Chelsea began with an intense schedule, featuring 11 games in just 35 days, with only four days of rest between matches. Given the limited training time, Rosenior opted not to make drastic changes. Instead, he built upon the foundations laid by his predecessor, Enzo Maresca, acknowledging the team's recent successes, including their Club World Cup win and Conference League title. Initially, Chelsea fared well under Rosenior, winning eight of their first 11 games, with the only defeats coming against Arsenal in the Carabao Cup semi-final.
However, as the schedule eased, allowing for more training time, Chelsea's performance began to decline. Rosenior introduced a more aggressive, man-to-man press, but it ultimately led to the team's downfall, as they struggled to adapt and were frequently exploited by opponents. The head coach's authority was further undermined by the team's poor performances, including an embarrassing 8-2 aggregate loss to Paris Saint-Germain in the Champions League.
As the losses mounted, Chelsea's players began to publicly question Rosenior's tactics, and the team's results continued to deteriorate. Despite inheriting a flawed squad, Rosenior's inability to improve the team's performance with increased training time raises questions about his coaching abilities. In contrast, Manchester United, under Michael Carrick, have shown significant improvement since January.
The disparity between the two teams' trajectories has ultimately led to Rosenior's dismissal, with Chelsea currently sitting 10th in the Premier League table.