Ward > both Robson and Anderson?
Also not sure Gabriel has put a foot wrong since a shaky game against Ipswich and Peterborough are usually there to be got at, even if they're good going forward. Last year, Macdonald was crucial against them and this year we've gone with two 'proper' full backs.
Still, as said above, probably best to wait and see. I guess his thinking might be that Gabriel's positioning might be exposed against a better side but I can't work out why you don't play Robson and Dougall as they seem to be ideal together to me. Left/right, both got a bit of bite, Dougall sits a bit more and Robson can go forward a bit as result.
We'll see. COYP!