We have to remember that when Ole took over our starting XI looked like this: De Gea, Valencia, Smalling, Lindelöf, Young, Herrera, Matic, Fellaini, Lingard, Sanchez, Lukaku.
The players remaining from this team are the ones everyone wants to replace now (de Gea, Lindelöf, Matic). The players that Ole has used to get us 2. and into several quarter- and semi-finals have either been bought by him or they were part time players under the previous management. As a result there's very few positions where we don't see a significant drop in quality outside the starting XI.
With some proper backing we might end up with a squad that is capable of challenging in multiple competitions.