Arsenal's former coach Arsene Wenger has made an interesting prediction about the future of football, writes Calciomercato. " Over the next five years the substitutions of a match could be decided on the social networks, maybe there will be a vote in the break between the first and second time to determine which players will be replaced and which ones will remain in the field for the second time," he told BILD. "The power of clubs will only decrease. That's why the leaders of the clubs will have to be stronger, to take up the challenge against external influences. "