Son has been a wonderful player since Kane's departure, and I'm really pleased with how his game has grown throughout this time. The hand band he was given for team captain is well-merited, and he's keeping up with the captaincy duties assigned to him.
Not only has Son been a fantastic player now, but he was also a good player even during and after Kane left the club, however, you can say that his performance is no longer been overshadowed by the good performance of other players like that of Harry Kane and is now the only player of focus of attention as no other player does incredible like him currently in the club.