Kronwall - Green
Dekeyser - Quincey
Marchenko/Smith - Ericsson
We keep our best pairing (D and Q). Ericsson plays on third pair where he's less likely to make errors. Smith would be his offensive compliment. Kronwall and Green just raise havoc on top line.
Except possibly the Wings.
On the top pair against top lines Green may wreak havoc but possibly not the kind you're looking for. Green played 19 minutes a game for the Caps (good for 5th in TOI/game) and 2:45 of that was on the PP. He also started in the offensive zone 60% of the time. If he were on the top pair I'm guessing we'd all be pining for the good ol days when Ericsson was there.
Anything could happen and I'm guessing he will be asked to do more on the Wings, but I don't see him on the top pair. Like Helmethead posted, middle pair seems likely, with a ton of PP minutes.