It would be more of an alternative setup to allow Cancelo a break.In reality, Cancelo was absolutely immense at it so we need to play to that strength.
Basically the tradeoff is to go from KdB and Cancelo to KdB and Foden.
An alternative, is swap Gundogan for Cancelo, then you have Cancelo, Foden, KdB supporting the front 3, which is also scary to think about.