Would give him a chance in midfield ahead of Mavericky if that's what it takes tbh. Just think would be stupid letting him go from the club and not knowing exactly what we have in him.
But with all injuries upfront we could also play 3-4-3 (Xavi has used this formation at Al Sadd initially)
Something like
MATS
Araujo-FDJ-Garcia
Dest-Busi-Nico-Alba
Pedri-Gavi
Memphis
Demir and Puig could come in rotations with Pedri and Gavi (Coutinho possibly as well, we'll see what Xavi thinks of him) could be our best formation short term.
Don't see much better options with Ansu, Dembele, Kun and Braithwaite all out for Espanyol and probably Benfica game as well. Dembele could be back after that but still wouldn't force him into the starting XI as we all know he could get injured again at any time. Probably won't see others back before January though and we also won't be able to made any signings before then (and it's also questionable if we can really get someone useful in January).
Try to establish control of midfield, limit chances to opponents and then see what we can do in attack. Probably better than forcing Segunda B wingers like Abde and Ilias (who are likely even less ready for first team football than Demir) into the lineup just because we don't have anyone else to play as a winger.