Ange Postecoglou's brief tenure at Nottingham Forest has come to an abrupt end, leaving many to question whether the Australian manager was ever truly suited to the Premier League. Sacked after just 40 days and eight games in charge, Postecoglou's reign is the shortest in Premier League history for a permanent manager. The dismissal follows a string of disappointing results, culminating in a 3-0 defeat to Chelsea at a despondent City Ground.

Forest's owner, Evangelos Marinakis, made the decision swiftly after the Chelsea loss, which saw the team fall into the relegation zone. The club released a statement citing "a series of disappointing results and performances" as the reason for Postecoglou's departure. The team failed to win any of the eight games under Postecoglou, picking up just one point from five league games and getting knocked out of the League Cup by Swansea.

Barney Ronay argues that Postecoglou could be considered the least effective Premier League manager ever, particularly when considering the quality of players at his disposal. While there have been managers with worse win ratios, Postecoglou's 26% win rate in his final 50 games is notably low. Ronay suggests that Postecoglou never fully grasped the task at hand at Nottingham Forest.

Postecoglou's appointment at Forest was met with some skepticism from the start. Taking over from a "successful, popular, and settled predecessor" seemed an odd choice, especially when Postecoglou suggested needing time to rebuild a project when Forest was coming off a strong season.

Despite winning the Europa League with Tottenham Hotspur four months prior, Postecoglou's arrival at Forest didn't translate into immediate success. Some argue that Spurs' significant budget in the Europa League made winning almost an expectation. His preferred attacking formation of 4-3-3 seemingly did not mesh well with the team, and Forest struggled to score, managing just one goal in his first five Premier League matches.

The search for Postecoglou's replacement is already underway, with names like Sean Dyche and Roberto Mancini being considered. Forest are aiming to appoint a new manager before their upcoming Europa League match against Porto.

The question remains whether Postecoglou's high-intensity, attacking style was simply not suited to the Premier League's demands and the specific challenges at Nottingham Forest. While he has been described as hard-working and gracious, his inability to adapt and deliver results ultimately led to his swift dismissal.