I think this is the issue. It does work for some teams, Chelsea have done well with it for example, but they have exceptional midfielders. We don’t have a proper shithouse who won’t give the opposition a minutes peace and is willing to stick the boot in. McGinn comes closest to that but for whatever reason we can’t get a tune out of him when he plays deeper like he does for Villa. We have a lot of tidy, ball-playing midfielders, plus McTominay as a box-to-box option, but it isn’t enough out of possession.
I still think 5 at the back can have its uses but as we’ve seen since the Serbia game it isn’t working for us right now. We sit too deep and ask the midfield to do too much. Going for a back 4 with Tierney at right back has got to be worth another try than persisting with this pish.