With players like Deepak Hooda, Suryakumar Yadav, Rishabh Pant and Shreyas Iyer in the mix, it is getting tougher for Kohli to own a place in the Indian T20 playing eleven.
The match against Leicestershire ended in a draw at Leicester on Sunday.
Ashwin is currently in quarantine and will only join the squad after meeting all protocols requirements.
Sangakkara commented about the team's oldest member, who could manage only 12 wickets in 17 games this IPL season.
The all-rounder adopted a funny-looking stance while facing left-arm wrist-spinner Kuldeep Yadav.
Ashwin on Sunday became the first batter to get 'retired out' in IPL history.
"Sanju has got an amazing attitude and a good head on his shoulders," said the veteran off-spinner.
Karunaratne's 107 went in vain as the Lankans were bowled out for 208.
Anil Kumble tops the chart with 619 scalps which he claimed in 132 Tests.
The off-spinner was picked up for Rs 5 crore by Royals on the opening day of the IPL mega auction.