George Garton, who represents Sussex at domestic level and hasn't represented England so far, has featured in 38 T20s and taken 44 wickets with a bowling average of 20.06.
BCCI has decided that the IPL will go on despite the Covid-19 crisis in India.
Kuggeleijn would be replacing Australia's Kane Richardson - who opted out of the tournament due to the surge in Covid-19 cases in India.
Zampa and Richardson both are stuck in India as the Australian government has cancelled all Indian flights till May 15.
Adam Zampa and Kane Richardson have decided to pull out of IPL 2021 amid growing concerns.
New Zealand vs Australia Match Result: James Neesham defended 15 runs in the final over as New Zealand won by four runs.
Kane Richardson had also skipped IPL 2020 to be with his wife for the birth of their first child.
Australia's Kane Richardson, who was bought by Royal Challengers Bangalore for Rs 4 crore in the IPL auction last December, had opted out of the tournament to be with his wife for the birth of his first child.
The 28-year-old - who had a base price of INR 1.50 crore, was unsold in the IPL 2020 auction.
The reason is not known as yet. With less than three weeks to go for the T20 tournament to start, this comes as a surprise for RCB fans.