I agree nobody of the others offers quite what Bruno does, but not many players in world football would. I’m sure with the numbers and profile of player Howe at his disposal he’d be able to create a functioning midfield if need be. If Bruno is also out for months it’s evidently a different matter, but take away the best two midfielders from any team and they would feel the consequences.
Losing Tonali for the rest of the season is a big setback, but I trust Howe to make it work with the players we have at the club.