"I think he is going to make a big comeback into Indian cricket in the next 18 months. (He has) a very professional workside. He puts his body on the line when he fields. (He is) a lovely person to work with," said Jennings ahead of RCB's next IPL match against Mumbai Indians here on Saturday.
The 21- year old Porbander-born Unadkat has played only one Test without taking a wicket at Centurion in South Africa three years ago.
"Anywhere between first and sixth of May. He is staying in Bangalore and is going to obviously start hitting balls. Once he feels he wants to join the side, we will put him in and he will join us in net practice," said Jennings.
The RCB chief coach credited his bowlers also, apart from Chris Gayle, skipper Virat Kohli and A B de Villiers, for the good position his team finds itself in (12 points from eight matches) mid-way through the league phase of the T20 tournament.