That's what I hope DA employs next season.
It was what changed the season for Conte, Wenger is reaping some rewards from it (yeah, I know - better players but .....!!) and if you recall we had one of our best recent defensive lines when we had Alan Tate on loan from Swansea in that formation.
Ok, you need marauding full-backs for this to work who can combine defensive and midfield duties - but I reckon out current first choice FBs could do that. It also lessens the dependency on their defensive capabilities because we would have that extra cover.
And Ng, Ray and Guthrie (if we can get him to commit) would make an effective threesome.
I know some will say why keep a defence that was already leaky but I say play them in the right formation and they would be more effective. Just need another CH for options.

Further up the field, looks like we will be retaining DH, so that's our skipper sorted. Maybe one more midfield addition.
And with Nicky Maynard back on the market, I'd have him back in a heartbeat.
Now aged 30, is that possible or a pipe dream?