Complex sentence: Stojanović also played for a Toronto based club, the Serbian White Eagles FC from 1974-1975, a club that played in the National Soccer League when Stojanović was there, but now competes in the Canadian Soccer League.
Split into simpler sentences: Stojanović also played for a Toronto based club, the Serbian White Eagles FC from 1974-1975. The Serbian White Eagles FC played in the National Soccer League when Stojanović was there, but now competes in the Canadian Soccer League.