"It would be great if nothing will occur during the competition as well as during every match all over the world because having mixed sport and racism, something that nobody can understand and, of course, accept. So, hopefully, it won't be the case. But if something should happen there is a clear procedure, the so-called 'three-step procedure'. Referees know it very well and, of course, they are ready to go through the different steps when needed," Collina told journalists.

Russia will host its first-ever FIFA World Cup from June 14 to July 15, with the games set to be held in 11 host cities, Moscow, St. Petersburg, Sochi, Kazan, Kaliningrad, Volgograd, Nizhny Novgorod, Samara, Saransk, Rostov-on-Don and Yekaterinburg.