Mohammed Azharuddeen is not a full-time wicket keeper. During the last match, it was Sanju Samson who kept the wickets for Kerala. Anyway, the slot for wicket keeper batsmen is the most contested position in the Indian national team. There are too many contenders, with Rishabh Pant and Wriddhiman Saha being the top choices right now. Apart from these two, there are others such as Ishan Kishan and KL Rahul.
Rishabh Pant cannot be a specialist wicket keeper until he improves drastically, the number of catches he drops per series is high than any other wicket keeper in recent times.
Even in the last match Wriddhiman Saha played as a substitute keeper and he took some exceptional catches and i am sure if Pant was the keeper there is no way they will get out.