Plans by Bundesliga club St Pauli to become a co-operative have taken a step further with detailed proposals being outlined for the how the unusual football business model will work. The promoted Hamburg club are famous for their left-wing fans, who have often criticized other financing methods such as energy drinks firm Red Bull’s investment in RB Leipzig. “For us, the most important thing is that we can almost completely reduce the club’s debt,” commercial director Wilken Engelbracht told the Hamburger Abendblatt newspaper on Wednesday, adding that loans taken out during the coronavirus pand…