Who say you have to a die support to wear a football jersey. I is a Desperados fan, but if I get a Renegades, All Stars, Phase2, Silver stars, cap or jersey, I go wear it.
The proleague office should have all the team jerseys to sell. That is their league teams. That is there team. They should get the both T-shirt version and official version for who can afford a cheap or expensive one.