Michael Carrick has given Manchester United their joy back

At the time of Ruben Amorim's shock sacking, Manchester United sat sixth in the table. There were signs of hope and progress, but also much in the way of disappointment and misalignment. Since Carrick entered the frame at Old Trafford, the Red Devils have won four in a row, closing the gap on City in second to just three points. This is a United team that are not only playing with simultaneous swagger and stability. But a team that is rooted in togetherness. Even beyond the results, this is the most impressive thing that Carrick and his coaching team have done since coming into the fold at United. They've created a team that are incredibly organized and tough to beat, fluid and exciting on the attacking end, and together in everything they do.

Casemiro is leaving, and United still can’t replace him

Casemiro's been one of the best players in each of Carrick's matches in charge. In fact, he's been almost too good. Sunday's match against Fulham exposed exactly what United will miss when he departs, and why he might be someone they simply can't afford to lose, even if they must. At home to Fulham, Casemiro dominated the midfield, and put his stamp on both of the opening goals - scoring one and assisting the next. His absence in the dying moments of the game served only as a warning sign against Fulham, as Carrick's red-hot start to the season continued. But if this is how they play without him, the Red Devils better hope he's fit until the end of May.

Who should replace Casemiro at Manchester United?

There are exits that feel like endings, and endings that feel like reckonings. Casemiro’s Instagram announcement this week — confirming he’ll leave Manchester United at the end of the season — is both. It's the departure of their most experienced leader, and at the same time, a clear willingness from United to move on past the era of plugging any gap with star power. While this might be a smart financial decision, it's also a decision they have to get absolutely spot on. Casemiro is just about irreplaceable. Nevertheless, I attempt to find his replacement. Here are the candidates to replace Casemiro, and why this won't be easy for the Red Devils.