Complex sentence: Canberra is the only team in the league that is not affiliated to a men's A-League club, although a team in the National Youth League from Canberra also competes (the Australian Institute of Sport).
Split into simpler sentences: Canberra is the only team in the league that is not affiliated to a men's A-League club. Additionally, a team in the National Youth League from Canberra also competes (the Australian Institute of Sport).