It's also shortsighted to still blame a manager for having one bad month in a whole competition. December is the only month that we have been really bad resultswise, the other months have been OK. Look at where we would have been now if that month would have been the same as the other months. We would have had 6-9 points more and would have been at least 3rd. With a team full of 18 year olds, that's not bad. Yes, at times the matches have been boring, but also Barcelona was not created in one day: these players have been playing in the exact same system from age 12 and had years and years of practice. The same thing you see with Rashford and Fosu-Mensah, they have played in LvG's system in the youth under Warren Joyce for almost 2 years and now slot very well. Schneiderlin, Darmian and all other summer buys just had 8 months.
In the end, we should always aim to return to title contenders, but we have had to do a massive rebuild. Now the dust clouds are fading, we can see a new team, built around Martial, Rashford etc. starting to form. Exciting times!