Conversely there's no evidence he makes players worse ?
Promoted youth, left out big names when he had too. Played attacking football, has a defined modern system of play.
Just hire him.
This will sound bizarre, but what is in Lampards favour is that he struggled when having 200m worth of player to get them right, but his best work came before that.
What it shows to me, is that at that elite level, hes a fair bit off that currently. The level where you are given big players with huge egos and fees and you need to organise them.
However, we are a long way from that, and when working with younger players, with less/no money he worked much better.
Theres lots of concerns I have, but in terms of what's needed if/when we get to the summer he would tick some boxes.
I think we would stop the leak of younger players, and we may even keep lads like Dobbin.