This has become very overplayed like.
Look at Everton's team this season. No one outside the back 5 was a regular(for a few years) under Moyes, no one.
The back 5 - yeah sure they are a good unit. 2 decent CB's and GK with Jags, Distan and Howard and two quality attacking full backs.
So a decent foundation there for sure. Not a "fantastic spine" though.
Without some very, very shrewd loan-signings and promotion of Barkley by Martinez ,Moyes' squad was looking pretty fucking shit after the sale of Fellaini.