UEFA president Michel Platini is considering an appeal to increase the one-match spectator ban and 80,000 euro fine imposed on Serbia for racist abuse and violence towards England Under-21 players.The sanction, imposed by UEFA’s independent control and disciplinary panel, has been widely criticised for being too lenient, with the fine equating to just under £65,000.UEFA itself can appeal to increase the severity of the punishment. UEFA sources said Platini has taken note of the sanction and will make a final decision once he has read the full file on his return from Japan next week.The European body’s prosecuting inspector had proposed more "drastic” measures, the Serbian federation has admitted.