Though Chennai did not play to their potential during the league stage, Kumble, who plays mentor's role with Royal Challengers Bangalore, said they have come back strongly in the play-offs and also possess the experience to beat Kolkata.
"They are a champion side. Look at the individuals in the team. They have a great battery of international cricketers. All of them have a lot of experience. Yes, they were scratchy in the group stages but they have come back strongly. RCB, though, did them a favour (by not winning against Deccan Chargers). And then in the playoffs, they literally bulldozed Mumbai Indians and Delhi Daredevils," Kumble was quoted as saying in cricketnext.in.com.
Despite their strong comeback in the play-offs, Kumble warned Dhoni's men to be wary of West Indies mystery spinner Sunil Narine, who has claimed 24 wickets so far at an economy rate of 5.20.
"Kolkata's bowling is really good, thanks to Sunil Narine, the mystery bowler. He ties up one end, that helps the other bowlers. He is one key figure in this match. A lot rides on how he fares," he said.
Kumble feels a single player can turn the game around and Chennai have the benefit on their home soil.
"In the T20 format, one individual can turn it around for a team, like Murali Vijay did against Delhi. Playing at home will also stand them [Chennai] in good stead. Their track record at home is quite good. It’s a good wicket at Chennai. It's a wicket where you win toss and bat first," he said.
Former India opener Aakash Chopra also favoured Chennai to lift the title, Chopra said: "When it comes to knockouts, there is no team like CSK. Yes for me, it’s advantage CSK. True, KKR have also played well in this tournament but against this CSK team, it’s going to take some beating."