That shows that he was on neo-pro wages when he was a neo-pro (in 2019). The least he would have earned in 2020 is €39,068 but I suspect quite a bit more. Still wouldn't have been a Rad Millionaer though!
Someone just offered him more money I would imagine. I assume the team extracted their pound of flesh from UAE and all this "he's back on the market" stuff was just to make it sound quite as bad.
https://www.blick.ch/sport/rad/das-steckt-hinter-dem-transfer-hammer-marc-hirschi-22-wird-jetzt-rad-millionaer-id16278332.html
Rad Millionaer is a great job title