Kolkata Knight Riders splashed out a record INR 15.5 crore for Australia star Pat Cummins in the IPL auction on Thursday.

Cummins had been the subject of bids from both Royal Challengers Bangalore and Delhi Capitals before Knight Riders gazumped their rivals.

The deal, worth roughly $2.2million, makes Cummins the most expensive overseas buy in IPL history.

The top-ranked Test bowler previously played in Kolkata in 2014 and 2015, along with Delhi Capitals in 2017. He missed the 2018 tournament with Mumbai Indians through injury.

Cummins has 17 wickets, at a rate of 29.35, in his 16 career IPL matches to date.

He is joined at Knight Riders by England limited-overs captain Eoin Morgan, whose reward for 2019 Cricket World Cup success is a much-improved deal.

Morgan, who is set to lead England again at the 2020 T20 World Cup, fetched INR 5.25 crore - more than double his wage for Kings XI Punjab in his most recent appearance in 2017.

Meanwhile, Cummins was not the only quick to welcome a big contract on Thursday, as debutant Sheldon Cottrell went to Kings XI for INR 8.5 crore.

And Indians signed Nathan Coulter-Nile for INR 8 crore.

Rajasthan Royals brought Jaydev Unadkat back for a third straight year, this time for a more modest INR 3 crore having spent top fees on the 28-year-old at the past two tournaments.

Glenn Maxwell went to Kings XI for INR 10.75 crore, while Royal Challengers sent INR 10 crore to Chris Morris.