At the moment, his T20 game is piss poor. He needs to bulk up and add to his power game. He definitely has the talent to be one of the leading batters in world cricket, not sure about the next big thing bit.
I'm a huge fan of Shadab Khan. I see him and Kuldeep Yadav bamboozling a lot of batsman in the future.
Regardless of his record, his power hitting game is quite lacking demonstrated by the struggle to accelerate after hitting hundreds. Recently, he scored a hundred off 26 balls in a charity match so I feel that he clearly working on it. But it is still early days.
Shadab is a decent spinner but has been picked off a couple of times. He seems to lose it when he goes to the park, might need some actual foreign experience before we push him towards the test side. I am more excited about the possibility of him adding some batting weight to our tail that we lost since Razzaq's retirement. Maybe even become the finisher that we need.