Agent Dmitry Seluk has sung the praises of departing Liverpool manager Jurgen Klopp.
Seluk is the former agent of Manchester City great Yaya Toure.
He said: It's a pity that such a specialist is leaving Liverpool.
"A very good coach. I am sure that Klopp will go to an equally reputable club. Klopp, when he came to Liverpool, was practically the only one who could give Guardiola a fight.
"If we look at his career in England from the point of view of their rivalry, it gave impetus to both.
"In competition with each other, their teams produced results."