Chennai Super Kings skipper Mahendra Singh Dhoni said that Sunil Narine is a difficult customer to read and added that he is well aware of the threat the mystery spinner could pose when they meet Kolkata Knight Riders in the Indian Premier League final here on Sunday.

"With his action, it is difficult to catch him as to which side he is bowling whether it is the one that comes in to a right hander or it goes out," Dhoni said here on Saturday.