Novak Djokovic has praised Daniil Medvedev a few times and it was the Russian who preented Djokovic from achieving probably the greatest achievment in modern day tennis. The Russian has also praised Djokovic many times before even picking the Serbian as the greatest of all time which just goes to show how much the Russian holds Djokovic in high regard.
Some more praise happened at the Davis Cup where the Russian was asked to create the perfect player by using characteristics of players competing in the Davis Cup Finals. Medvedev picked Djokovic for his backhand which he called one of the best in the history of tennis. Obviously, he is not wrong in that but he also picked Djokovic in terms of mentality saying:
"Because of how he handkes himself in tough situations on the court. He is extraordinary and I try to learn from him."
He also picked Djokovic in terms of athleticism as he explained that the Serbian is in pristine conditions able to play for a long time on the highest of levels. He picked Djokovic for his return as well as Djokovic is one of the best returners in the history of tennis. In terms of forehand, he picked Rublev and his compatriot was his pick for the funnies player as well.
In terms of pure talent he pciked Sinner and Alcaraz because they have a lot of talent for such a young age. And finall in terms of serving he picked Reilly Opelka.