Asked if he had recommended the player to Blues owner Roman Abramovich, Hiddink smiled broadly before saying: "Let me not comment on it. I am here to deal with the affairs of the Russian national team.
"I've kept a good relationship with Chelsea. As for Yuri, I called him up for Russia, I am their head coach, and as for anything else except the national team - such as Chelsea or CSKA - it is not my intention to comment."
"Russia players are also learning this abroad and are beginning to be recognised among the best players in Europe.
"They are learning that to be a top star in international football, they must work very hard in training and never complain."