I think as much as anything the great run we went on was due to the mostly inferior opposition. During that time the only big teams we played were Chelsea, Arsenal and Spurs, and out of those three Chelsea were in poor form at the time, we got incredibly lucky that Spurs couldn't hit a barn door, and Arsenal had an off day that they made up for when they played us in the league a few weeks later. I think that run of results was a bit fake really, once we played teams in good form and/or who played well on the day we got found out.
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No disrespect to them but that kind of suggests we should have beaten Huddersfield and Cardiff at the end of the bad run, but we didn't (and could be said Greenwood was very unlucky not to score at all in the last game).
Even despite them missing a few players and their mentality issue PSG still win 80% + of their games, yet with virtually no stars in the outfield, Utd beat them on the night (ie even without the infamous pen at the end). No way in the world is PSG inferior.
Utd also beat Leicester away under BR, which as a lot of the teams this season found, is very hard to do. You are also passing off the performance against Arsenal in the league, where Utd really deserved a draw at the very least (ignoring their VERY lucky penalty) - on any other day United would have scored 2 or 3 of their own.
No team win how ever many in a row like Utd did without thoroughly deserving it - and yes Utd were lucky DDG was in inspired form for Spurs...but then you could say just as fairly Huddersfield etc were just as lucky his form had disappeared at that point.
Utd paid for an aging defence (and even those who aren't aging are at best mid-table quality for the most part anyway), missing Herrera for 1/2 dozen of the last few games (who is a dreadful miss next season imo) and a highly inconsistent midfield / attack......and a completely non-existent pre-season last summer with some players not bothered at all about who they represent.
A club the size of man utd can't be playing 352...it's not the man utd way
As long as the manager/ players are using attacking football the formation is irrelevant.
3 - 5 - 2 could easily transition into 3 - 3 - 4 with the ball...as long as the full backs (or cm's) have good legs and are incredibly fit
Also depends on who /how the opposition plays.
As long as the players wear the shirt with pride and work their *** off, and try to play attacking creative football OT will love them- majority or all of these factors have been missing for the last 6 years.