In a way it's a core David Moyes memory for me - having a solid keeper. He's inherited England's #1 here which is probably a massive boost to him.Yup he knows Pickford from Sunderland also which will help a lot.
Think Moyes will go with Garner in the DM spot actually, way more mobile than Mangala whose like molasses, Garner also way more comfortable in the side areas which means dropping in to cover say for Patterson if he's allowed to bomb forward should come way more naturally. If he dies go for that setup btw I can imagine Lindstrom playing on the right but drifting inside a lot - think of how Moyes set up on the left with Baines and Pienaar. Would shock me to see him giving Tim that spot designed to get into the box late - the Cahill type role, could be Armstrong but doubt Moyes will see him as ready yet - but a few additions needed but the fundamentals are there already in great part
Armstrong is quite big, I don't know how his heading/positioning is but hopefully he gets a tune out of him in the next few months, looks like there's a raw player in there.