Kolkata Knight Riders fast bowler Ali Khan has been sidelined with a side strain, but the franchise has opted to retain him instead of ruling him out of the tournament.

Khan, who is the first player from the USA to feature in IPL, is understood to be recovering fast and has been training with the Knight Riders squad.

Knight Riders' chief executive officer Venky Mysore said while Khan's injury was untimely, the franchise remained optimistic about his recovery. "While we are disappointed that he injured himself, KKR always does everything to take care of its players and therefore have asked him to stay on and are helping him with his recovery and rehab. Hopefully, he will recover fast," Mysore told ESPNcricinfo.

Late on Tuesday, the IPL sent a media release listing players from different franchises that had been ruled out of the tournament due to injury. Among the names was Khan, but the IPL did not specify the injury, but said he was "injured and will miss the rest of the season".

Khan had replaced Harry Gurney at the Knight Riders last month after the England player was ruled out following a shoulder injury. Khan had made the trip to the UAE after helping Trinbago Knight Riders - owned by the same parent company as KKR - win the CPL. Khan hits speeds of more than 140kph and often bowls in the slog overs, and is known, in particular, for having a good yorker.