Premium GKs rarely are the best value in FPL. Although they keep more CS, they rarely get save pts, and thus bonus too.
Get a 4.5 GK from a mid table team, one that will get quite a few CS, saves and bonus. Last season it was Raya.
If Flekken will replace him, he's likely the best option to go for.
Don't need 4 decent DEF. 3 decent, a 4.5 cover, and a 4.0 starter is probably the best.
Use the extra units saved on DEF to upgrade Tonali to a more attacking player, as he's a holding MID.
Given NEW early run, he's more likely to get cards than a goal involvement.
DCL is also too injury prone. There's quite a few decent 6.5s around. Even some 5.5s better than him.
With your DT, I think the only ones to look out for are Colwill, Mount and Rashford.
Colwill is good, but by the time we see a price rise, Badiashile might be fit again, and the recently signed Disasi could be ready to be integrated also. Then there's Thiago.
Dunno what will happen to Mount. United have so many options.
IMO, get Bruno in that position, and a CHE FOR from Nkunku, Sterling or Jackson for Rashford.
Bruno is one of the best in this game, and you get some diversity.
If CHE surprise and start scoring, you have a chance to be in on the action.
Given they're all similarly priced, you can also jump between the three CHE FOR with one transfer if you chase the cash cow.
Mudryk is another with uncertainty, but he's a place holder. Danjuma of EVE is a decent option, and slightly cheaper.