On Wednesday (January 22), India lost second straight match of the series to the Kiwis in Hamilton. The first and second matches both saw India failing to run-chase.
While India went down by 24 runs in the first game in Napier, they fell short by 15 (Duckworth/Lewis method) in Hamilton.
Offspinner Ashwin has been in the spotlight for not wickets in recent times in overseas conditions. In both matches he has failed to dismiss a batsman.
So far in the series, he has bowled 15 overs and has conceded 102 runs.
Following this poor form, Prasanna has called for Ashwin's axing from the side for next match which is scheduled to be held on Saturday (January 25) in Auckland.
"Ashwin should be dropped and Stuart Binny needs to come in," Prasanna told ThatsCricket on Thursday.
Prasanna observed that Ashwin had no variations in his bowling at the moment.
"Ashwin's problem is there are no variations in his bowling. His bowling has become stereotype," he added.
According to the 73-year-old, Ashwin's quota of 10 overs can be filled in with the offspin of Suresh Raina and Rohit Sharma.
When queried whether it was a good move to pause and deliver which Ashwin has been doing, Prasanna was against it.
"It is of no use. It will work once but every time. The batsmen are watching his action and waiting for the ball. Ashwin thinks he will leave the batsmen guessing by pausing in his delivery stride but he himself is left guessing now," explained Prasanna, who took 189 Test wickets in 49 matches between 1962 and 1978.
R Ashwin in last five ODIs
0/58 Vs South Africa (Johannesburg)
1/48 Vs SA (Durban)
0/63 Vs SA (Centurion)
0/52 Vs New Zealand (Napier)
0/50 Vs NZ (Hamilton)