If only it was that simple. Gundogan can't be relied on due to injuries - same with Delph. Yaya isnt mobile enough to play in the holding midfield role - especially against the top sides, plus the age factor. Fernandinho isn't consistent, and didn't have a particularly good season last season and is 32. The other 3 are attacking players.
I do agree that in most games it isn't an issue but against the top sides it is. We need a top class holding midfielder. Someone who can protect the central defenders and carry the ball forward. The type of player that makes a late run into the box.
It's concerning that the spine of the team is short of players. We need a top class central defender;, a commanding central midfielder, as described above and another striker.
I feel we are going to have to be patient.