After Tuesday's European Championship playoff return against Serbia at Tele2 Arena, Seger - the European football player who has made the most national team appearances - will be thanked.
It would have happened already last summer, in connection with the European Championship qualifying match against Ireland. But Seger herself saw to it that the farewell was postponed after the news that national team coach Marika Domanski Lyfors had been struck by an inoperable brain tumor.
I don't want to do it without Marika, Seger has told Aftonbladet.
Can't be replaced?
Most things suggest that Sweden will qualify for the 2025 European Championship on Tuesday evening. The 2-0 lead from the away match against Serbia, 34th in the world rankings, should be enough.
Even without Caroline Seger on the pitch.
But replacing her has not been easy, admit both players and leaders.
I don't think she can be replaced at all. Everyone has different ways of leading, but she is incredibly broad in her leadership, both on and off the pitch, says Kosovare Asllani, who for many years played alongside Seger in midfield.
As team captain, Seger was national team coach Peter Gerhardsson's extended arm on the pitch and in the dressing room. That part has solved itself naturally, he thinks.
She has developed many leaders in this player group, she has set norms and values for how to be. So when she's been away, we've had good alternatives. And that's still the environment.
The optimal player
Harder then to fill the gap after football player Caroline Seger.
As a player, she was the optimal one. She was incredibly skilled, it looked like she always had extra time even though she wasn't the fastest player. This game understanding, her head movement and such things, and also her defensive play... I think it's hard to come up to precisely those qualities, says Gerhardsson.
One who tries is Hanna Bennison, who started in the "Seger role" away against Serbia on Thursday. The 22-year-old Juventus midfielder made her debut in Rosengård's A-team when she was 14, in the A-national team when she was 17. Both times with Seger as a safe point by her side.
She has helped me incredibly much. She is a great role model for me and it will be special to honor her, says Bennison.
Filippa Angeldahl, 27, midfielder, Real Madrid - given alongside Seger in the national team in recent years:
She has meant incredibly much. She is also an inner midfielder and she took me under her wing in the beginning. She made me feel safe and taught me a lot. It's always hard when a big player and leader disappears.
Magdalena Eriksson, 31, center back, Bayern München - one of the players who has taken over the team captaincy in the national team:
She was one of those idols I had when I longed to get into the national team. Then I went from being a "fangirl" to becoming colleagues and talking leadership together, about how we can get the best out of the team. That journey has been incredibly cool for me, because I've learned so much from her leadership. And it's something I really work with trying to keep here in the national team.
Kosovare Asllani, 35, midfielder, London City - one of the new team captains after Seger:
I really hope the arena is filled, that people come here and honor her. I don't think anyone will ever reach her numbers when it comes to national team appearances.
Julia Zigiotti Olme, 26, midfielder, Bayern München - competing for the "Seger role" in the national team:
She means a lot to everyone in the team. For me specifically, who has competed with her. She has always helped and tried to make me better. She means incredibly much and will always be a great role model.
Rosa Kafaji, 21, midfielder, Arsenal:
It's an incredibly, incredibly good player who has done incredibly much for Swedish football. She deserves a good farewell. It's also a reason for people to come to the arena.
