With Herrera out for that game, who better to fill that role?

I don't believe anyone else is capable of match Herrera's tenacity. Put Fellaini there (which Mou probably will) he'll likely stick as a sweeper. Carrick too.

Sweini is a decent option but he'd be much less mobile. I really think we've got nothing to lose putting in TFM. Just tell him to press hard and his pace should take care of the rest.