Ralf Rangnick's biggest in-game Manchester United problem is becoming clearer each day

Manchester United’s FA Cup defeat to Middlesbrough was bitterly disappointing for supporters, who saw the competition as an opportunity to winsome silverware this season.

Ralf Rangnick’s team had moments or brilliance on Friday evening, but wasteful finishing ensured United failed to progress to the fifth round of the competition.

It means that United's only hope of silverware is the Champions League, and not many people need to tell you that's an unrealistic target.

Currently, Rangnick's side are miles away from where they need to be. When you look at the likes of Manchester City, Liverpool and Chelsea, they have a structure, work ethic and plan in place for success. United don't have any of that at the moment.

Excluding all the external factors, you have to look at the team performances and despite Rangnick only losing twice in his time in charge at Old Trafford, some of the displays haven't been good enough.

While there were plenty of positives to take from United's performance, ultimately, they didn't win the match against a side which is in a lower division. That is a poor reflection of where the club is at.

The reason why United lost that game was because a handful of players didn't take any of their chances. The likes of Cristiano Ronaldo, Bruno Fernandes, Marcus Rashford and, to an extent, Jadon Sancho, scuppered many opportunities which allowed Chris Wilder's team to get back in the game. Although they had a spot of luck with the goal, the game should have been out of sight by the time they scored.

As each game passes, Rangnick’s biggest issue at United is becoming clear.

When the 63-year-old was brought in, everybody expected him to have a new manager bounce because that's a trend we've seen happen in