It probably goes without saying, but everyone in the dressing room is building towards August 12 at the Amex.
The opening day of the season sees the Seagulls return to the top flight against Pep Guardiola's superstar side with a potential starting XI worth a cool £450million.
While Albion may not be splashing the cash like the English elite, full-back Rosenior, who has played in the Premier League with both Fulham and Hull City, says Albion are in a strong position themselves.
They fielded virtually two completely different XIs in their pre-season 6-0 drubbing of Crawley Town on Saturday and Rosenior has stressed how important it is to have that competition for a starting berth.
He said: "Everyone wants to play, everyone wants to be involved, to start that first game and stake a claim for the shirt. That is a great thing to have. You want competition for places and I am sure the club is going to bring in more faces and they will add to what we have already got.
"You have to remember that with all this talk over big-money transfers fees and things like that, we have a squad that has gained pretty much 90 points over two Championship seasons.
"We are in a strong position already and I am sure a lot of players in this group will go on to prove themselves as top Premier League players.
"Competition for places is what the manager wants and what we want as players. We should want a strong a squad as possible as we are going to need as much help as possible. It's a difficult league and they better your 22 to 25-man squad is the better chance you have as doing well."
The defender, who missed much of last season with an ankle fracture and ligament damage, has also been pleased with their two pre-season results. And as a marshal in the backline, is much content with keeping clean sheets.
Rosenior said: "It's about minutes in the legs, getting an understanding of what we are about, we have played two pre-season games and not conceded a goal. I know that is really important to the manager and us as a group.
"That is what we have built our whole foundations on, keeping clear sheets and what we need to get into. It's about getting good habits in and making sure we do the right things on the pitch and we have done well so far."