Do you mean injuries? In terms of ability that MF is up there with any...
I think that Midfield will really struggle in the CL. No physical presence at all in the MF.
And before anyone bring the barça Mf, totaly different style, barça don't sit back. They press the shit out of you and end up recovering the ball a few seconds later.
And their players offer tons of creativity and their passing game was unmatched.
Pogba and Vidal were unique because they offer both creativity and offensive contrbition along with tremendous defensive work ( Vidal ).
Both things our MF will definetely be lakcing if don't add a player with those traits.