From the commissioner (MentalNinjas on Reddit):

<tn>Comment 1:</tn>

So actually my favorite animals are penguins, and he’s wearing the UMD jersey because that’s my alma mater and this is a self insert lol. Haha hopefully that doesn’t break the continuity too much

<tn>Comment 2</tn>

My friends favorite soccer team happened to be Bayern Munich, and both the color scheme and league fit Heinrich really well! (German league, Red/Black/White uniform).
Is there a different team that you think might've fit her better?