Fernandes, who obtained Russian citizenship in 2016, was named in Russia's final squad for the 2018 FIFA World Cup on Sunday.

“Mario [Fernandes] has blended in. There were six CSKA players [in the preliminary World Cup squad], our physical trainer is also from CSKA and we will play [Turkey] at the CSKA Arena tomorrow. I think he has had no problems [with adaptation],” Cherchesov said.

Fernandes was capped once for Brazil before becoming a Russian citizen and has subsequently made four international appearances for his new country since 2017, including Wednesday's 1-0 friendly defeat by Austria.

Russia will host its first-ever World Cup from June 14 to July 15, with the hosts set to face Saudi Arabia, Egypt and Uruguay in Group A.