Football players’ union backs idea of use of four substitutes http://t.co/jEWRysbr7F footbaLLove (@footbaLLove)April 29, 2015 Football players' union backs idea of use of four substitutes Fifpro members have given their backing to the idea of allowing a fourth substitute to be used during matches. The global players’ union conducted a poll across continents with 84 … Okumaya devam et "Football players’ union backs idea of use of…"