SOCHI, RUSSIA - FEBRUARY 28: Head Coach Mladen Krstajic of Serbia talks to the media during Day 2 of the 2018 FIFA World Cup Russia Team Workshop on February 28, 2018 in Sochi, Russia. (Photo by Christopher Lee - FIFA/FIFA via Getty Images)
SOCHI, RUSSIA - FEBRUARY 28: Head Coach Mladen Krstajic of Serbia talks to the media during Day 2 of the 2018 FIFA World Cup Russia Team Workshop on February 28, 2018 in Sochi, Russia. (Photo by Christopher Lee - FIFA/FIFA via Getty Images)