I think it's a case of a few tweaks to starting position and man managing a couple of players to get them back up to form. The 433 should boss well for us and here are immediate problems to solve, based on yesterday's performance
1. Central midfield
Lingaard, Matic and Pogba all struggled yesterday. While i expect Lingaard to be inconsistant, the other two were below par due to injury niggles/ fatigue. A bit of careful performance management over the next month should be fine.
Jury is still out on whether Lingaard can play deeper in midfield. I would not write him off yet, but it may be best if we see more of Carrick and Mctom over the next month, until he has chance to adapt in training.
2. Fullbacks
Valencia struggled to get forward yesterday and lacked incision. Young was better, but did dwell on the ball too often. We need to look at replacing both next season, but in the meantime I'd be starting Shaw and Young as they are the best pairing
Centreback
I like Smalling's effort, but is stunting our build up play with his lack of technical ability, with a tendency for us to go long. A better passer in defence would give us an extra factor to be better in the build up. I don't think Rojo offers that, so it's time to make Victor L sink or swim. For 30m plus, it's time for him to step up as a starter - if we can work on his confidence, then we have a good defender who can use the ball.
Attacking Flanks
Like Rashford, Martial is a shadow of a player on the right. It's time we started Sanchez out there to see what he can do. In the 433 they have ample opportunity to be fluid and switch sides.
If that does not work then we need to look to youth. Chong has looked very strong and could be deserving of a promotion to start out right. It means rashford and martial will be benched, but sod it
Composure
Jose needs to work with the whole team on their composure. Far too often we are thumping it long to Lukkaku, or into wife areas. Nothing wrong with variety, but this appears to be our main approach and it's not working.
The player need to start passing more in the build up and showing more composure.
A few points, but I think the majority of the above is easy to solve.