When Lukaku was injured it was him the season was resting on.
McCarthy gets an injury and suddenly it's him marshalling midfield that our season was resting on.
Stones is out and suddenly we can't defend without him, he was who our season relied upon.
Only a matter of time before Deulofeu had his turn (again). I'd be happy to have him back for us, seems Barca have played it very nicely, first team game time for us, Spanish first team game time for a rival after us.... either steps up for them or they sell for a nicer fee than they could have gotten for a potential player. Wouldn't be amazed if he went to Arsenal.
Football is business after all.