#5 Europa League and fixture congestion

Liverpool have no European competition this season and have also been knocked out of FA Cup; Tottenham and Arsenal have also been humbled in European competitions. This leaves Manchester City as the only club alongside United still in three competitions.
Towards the latter stages of the season, this fixture congestion will play a vital role in shaping the final league positions. When United rotate their squad, especially to give an occasional breather to Zlatan, a couple of tired legs may lead to points dropped.
Moreover, the feeling is already pervading at United that a focus on Europa League could yield more fruit than a top 4 struggle – don't be surprised if one or two league matches take backstage as the pressure of the knockout stages take hold.