Manchester United's interim manager, Michael Carrick, has been a revelation since taking charge in January. The team's performance has been nothing short of impressive, with Carrick guiding them to the most points in the Premier League and an enviable goal difference. However, as the article delves into, this success story is not without its caveats and potential pitfalls. The article highlights the importance of underlying performance metrics, such as xG (expected goals), which provide a more comprehensive view of a team's efficiency and long-term prospects. While Carrick's side has been on fire, converting more chances than any other team, the article argues that this may not be sustainable in the long run. The six players who have been the most clinical in front of goal are unlikely to maintain their form indefinitely. The article also notes that Carrick's team has dominated games less than under his predecessor, and their overall performance has not been as impressive when it comes to creating and converting chances. This is a critical point, as historical data shows that teams that dominate their games in terms of xG difference tend to have more success in the long run. The article uses the example of Aston Villa and Sunderland, who defied their xG numbers early in the season but eventually saw their results fall in line with their underlying performance as the season progressed. The article concludes that while Carrick's success is undeniable, it is not a guarantee for the long-term management of Manchester United. The owners must carefully evaluate whether Carrick has the potential to lead the club forward, considering both the short-term results and the underlying performance metrics. This is a crucial decision, as the club's future success may depend on it.