#1 He might find it difficult to manage an entirely new set of players

A major squad overhaul could also take its toll on Dinesh Karthik, who is a part of that major overhaul himself.
Having lost most of their star players in the IPL auctions earlier this year, Kolkata Knight Riders will have to rebuild their team from scratch, which may require time.
Unlike Gautam Gambhir, who was an instant hit with KKR, Dinesh Karthik might find it difficult to deal with KKR's relatively inferior squad this season.
With the deterioration of the highly rated Sunil Narine, Karthik will struggle to impose his team's authority in early stages of the game by using Narine as the impact bowler. Gambhir's excellence in executing the bowling spell of the West Indian was one of the key reasons behind KKR's success in the last seven years but the same can't be guaranteed this season.
But in the game of cricket, we never know. Therefore, it would be interesting to see how Dinesh Karthik manages to take on the responsibility of managing one of the most successful teams in IPL history this season.
But that being said, the proposition of Karthik replacing the legacy that Gautam Gambhir has left behind, seems a little too far-fetched at this point in time.
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