I don’t think it’s about BHAFC.
The fact going back to PSV hasn’t changed it tells me it’s about him and what makes him happy rather than it being a specific club or group of people.
Seems had his contract terminated and has retired at 30.
No injury…. Just fell out of love with the game.
https://www.psv.nl/english-psv/news/article/davy-propper-retires-from-football.htm