We don't have confirmed lineups or formations from the brief — no coach names, no tactical setups. So we go on what we know. Rosenborg at Lerkendal will likely set up to dominate possession, pushing full-backs high and looking to overload the wide areas. That 4-0 suggests they can be devastating when the opposition sits off. But Viking are not Fredrikstad. They will come with a plan to stay compact, hit on the break, and make the game ugly. Expect a midfield dogfight in the centre of the park, with Viking's double pivot looking to screen the defence and spring quick transitions through the half-spaces.

The key battle will be out wide. Rosenborg will try to pin Viking back with overlapping runs and early crosses into the box. Viking will look to stay narrow, force play inside, and then release their wide men on the counter. If Viking can win the second balls in midfield — and they showed against Sarpsborg they are willing to scrap for every loose ball — they can turn this into a scrappy, low-event game. That suits them. Rosenborg want chaos and space; Viking want structure and patience. The game state will tell the story: if Rosenborg score early, Viking have to open up and it could get messy. If it stays 0-0 past the hour, Viking grow into the game and the away side's discipline becomes the defining feature.