Maybe I can agree that United have temporary difficulties in defense, but definitely not with the fact that they are weak in midfield. I think that this is their strongest line and if it is normal then such a weak (relative to top clubs) opponent like Leicester will have no chance despite some weaknesses in United's defense. I think in this match United will be the clear favorite and will achieve an easy victory.
I don't think Manchester United has a coach who is able to take full advantage of all the players they have purchased. Even though I really believe that the existing players, Man United, can compete with City and Chelsea. But from the few matches that have been done it is not what I expected. When they can't break through their opponent's defenses they are too rushed and confused. It caused them to be overwhelmed during the counterattack. And that's what currently needs improvement at Man United.I also have such thoughts. United needs a charismatic coach. Maybe I'm too subjective, but I can't imagine how Solskjaer is aggressive - he always seems soft and kind. For the sake of interest, I tried to search in Google for pictures on the request "angry Solskjaer" lol
In my opinion, instilling some fear into the team and opponents is a great skill, but he doesn't have it. Most likely, if United does not win something significant this season (or at least does not reach the level of a real contender for victory in the championship/Champions League), then this will be the last season for Solskjaer.