Andy Murray has been announced as 24-time Grand Slam winner Novak Djokovic's new coach, but one of his adversaries isn't convinced.

In what was a huge surprise to tennis fans, Novak Djokovic recently announced that former player Andy Murray would be assigned as his coach from the upcoming Australian Open next year.Murray retired after the Paris Olympics this year,

He also reflected on the new partnership between Djokovic and Murray: “He can contribute on the emotional side, on the mental side and, above all, bring him a lot in the game. Although Andy has no coaching experience, he has complete knowledge of Novak, he has known him for more than 20 years and that is a big advantage.”