According to ESPNcricinfo, Seifert has been roped in as a replacement for United States of America fast bowler Khan, whose maiden stint at the lucrative league ended without any game time due to a side strain that he suffered while playing in the Caribbean Premier League.
Khan, 29, was himself an injury replacement, having come after England fast bowler Harry Gurney pulled out of IPL 2020 because of a scheduled shoulder surgery.
As per a report in the Stuff.co.nz, Seifert is set to join IPL as a replacement which is why he won't be able to participate in the ongoing domestic cricket in New Zealand.
Sunrisers Hyderabad (SRH) skipper David Warner on Sunday became the first foreign player to complete 5000 runs in the Indian Premier League (IPL). He scalped eight wickets in the tournament. He was amongst the earliest players performing consistently from the U.S. to be picked in the domestic West Indian T20 League. But it's confirmed in the other sources that KKR have already signed Seifert as Ali Khan's replacement. He was actually recovering from a side strain which he sustained during the Caribbean Premier League (CPL) 2020.
The 25-year-old Seifert has played three ODIs and 24 T20Is for New Zealand since making his worldwide debut in January 2019. He was Khan's colleague during the Trinbago Knight Riders' title-winning run at the CPL but didn't have too good a time of it, struggling on the sluggish pitches to score just 133 runs in nine innings at a strike rate of 109.91.