The 30-year-old started playing with BP as a six-year-old and this season he took over the club record for the number of games played for the A team from his own father Berndt Magnusson and now has around 280 games under his belt.
- I feel such gratitude to be able to experience this and it is difficult to put it into words.
It is completely, completely unbelievable, says Sandberg Magnusson to SVT Sport.
You've done this before. How high do you hold this?
- It is hard to say.
Last time when we went up to the Superettan and straight up to the Allsvenskan, I never thought I would experience it again, but now I'm standing here again.
It's incredible, incredible.
Has it landed?
- No, it is difficult, but it will come.
Before the season, could you have even thought that you could step up?
- No, I didn't think so, but I knew that we were damn good and the super one is tight and anyone can really step up if you get the flow and we got that.
There are many of these "fools" of players who believed in it and then it works.
BP has been a yo-yo team between first and Allsvenskan and players have left.
Sandberg Magnusson, grandson of the legendary Gösta "Knivsta" Sandberg, has stood faithfully by his BP.
- I am glad that I stayed so that I could be part of this.
I treat everyone in the team to play in the Allsvenskan, which is awesome.
They have hardly even played in the super league and now they will play in the allsvenskan and it will be so much fun for them and they deserve it.