Perth, Jan 9 (IANS): Former India captain Sourav Ganguly feels that the Indian bowling attack does not require a total overhaul but wants off-spinner Ravichandran Ashwin replaced with left-arm spinner Pragyan Ojha.

Ganguly said Ashwin hasn't bowled well in the first two Tests, as spin accounted for just four of the 24 Australian wickets to fall in the series, and backed the 25-year-old Ojha to play in Perth.

"I think the left-arm spinner could come in and do well. He's a good bowler and he's ready, and Ashwin obviously hasn't bowled well," said Ganguly.

Ganguly feels the 659-run hammering India's attack took in the first innings in Sydney was an aberration.

"I thought Umesh Yadav bowled very well in Melbourne so you can't leave him out after one bad Test match, and he had bowled very well previous to that," he said.

Ganguly advised the Indian cricketers to spend time away from the nets before focussing on the third Test in Perth that starts Friday.

"You can't practise all the time, you need breaks. They need to get the loss out of their system," he said.