Shakib Al Hasan
Shakib Al Hasan can be a decent choice for Kolkata Knight Riders as captain if Shreyas Iyer misses out. Shakib has vast experience of captaincy in international cricket and is a vocal, adept leader but the overseas limitations will be an issue if they want to hand over Shakib the leadership role.
The Bangladeshi all-rounder has ties with KKR as well as he has been a long-term player for them. With agility, skill and amazing leadership prowess on his side, Shakib can be the leader for the Knight Riders if Shreyas Iyer misses out.
Tim Southee
New Zealand bowler Tim Southee was roped in by KKR last season and he has retained his place in the squad this year as well. In Iyer's absence, the Kiwi bowler can be a captaincy option for KKR.
The 34-year-old has plethora of experience and has captained New Zealand in international cricket. With more than 700 international wickets to his name, Southee can be one of the mainstays in the KKR side and thus can take up the leadership role.
Nitish Rana
Nitish Rana is the only viable Indian captain option for KKR if Shreyas Iyer is ruled out. Although mostly a hot and cold player, Rana has the experience of captaining Delhi in the domestic formats.
The southpaw will be a risky option but KKR may not have any choice in terms of selecting a captain if Iyer is unavailable for them. It will be an added responsibility for the batter, who has endured a topsy-turvy period with KKR. It will be an opportunity for him also to reinvigorate his career and the added responsibility may play a crucial part in his revival.