Looks a pretty clever bowler for an 18 year old, although with his very side on action and the seam position often not ideal on his legbreaks he dosent look capable of prodigious turn. Not short on confidence either.
I've always had a bit of a theory that bowlers like him (ie slower, loopier wrist spinners) are less likely to succeed bowling in India than quicker, skiddier ones.
Due to the lack of pace in the pitches the slower spinners dont tend to get the same venom and bite from the pitch as they would in places like England or Australia, the ball tends to sit up and asked to be hit alot more. Whereas tweakers who are quicker through the air compensate for the lack of pace in the pitches, and because the pitches are so dry and dusty they still manage deviation which they would not get in alot of other conditions (ie Australia, South Africa, etc).
Look at the records of slower spinners in India - Warne, Murali, Mushtaq Ahmed, Vettori - all have very unflattering numbers.
Whereas quicker spinners like Kumble, Harbhajan, Boje, Afridi all seem to have done very well in India.