Players of Croatian national team attend a training session for 2018 FIFA World Cup in Rovinj, Croatia, on May 27, 2018. (Xinhua/Marko Prpic)

Zlatko Dalic (C), head coach of Croatian national team, reacts during a training session for 2018 FIFA World Cup in Rovinj, Croatia, on May 27, 2018. (Xinhua/Marko Prpic)

(180528) -- ROVINJ, May 28, 2018 (Xinhua) --Ivan Rakitic (L) and Ivan Perisic of Croatian national team attend a training session for 2018 FIFA World Cup in Rovinj, Croatia, on May 27, 2018. (Xinhua/Marko Prpic)

Players of Croatian national team attend a training session for 2018 FIFA World Cup in Rovinj, Croatia, on May 27, 2018. (Xinhua/Marko Prpic)

Players of Croatian national team attend a training session for 2018 FIFA World Cup in Rovinj, Croatia, on May 27, 2018. (Xinhua/Marko Prpic)

Vedran Corluka (R) of Croatian national team attends a training session for 2018 FIFA World Cup in Rovinj, Croatia, on May 27, 2018. (Xinhua/Marko Prpic)