Since Fletcher's two-year contract expires in March 2013, talks are on about the next coach and since Ganguly had also expressed his desire to take up the coaching assignment if offered, Viswanath also supported the view.
"If Gary Kirsten can become India coach, why can't Ganguly? But it all depends on the BCCI and Ganguly to take a decision on this matter," said Viswanath, who is in the city for the felicitation organised by Cricket Association of Bengal to celebrate the 25-years of Indo-Pak ODIs at Eden Gardens.
Viswanath also praised Dhoni as a captain, saying that "minus the last two (three Test series) series, his (Dhoni) record has been pretty good."
The former Indian cricketer also said that Team India will bounce back but would take some time since they are undergoing a transition.
"Every team goes through a rough patch. We have seen that happened with the West Indies as well as Australia. Some take a bit of time to bounce back. It's part of a cycle and India are also going through a similar cycle," Viswanath said.
"You have to put in a little bit of extra effort. I am sure India will shine and come out with flying colours. India were 8 down against England on the final day of the 1977 Test yet it was a full-house Eden Gardens. Such is the support we get here. Undoubtedly, it's the best centre that I've played in," Viswanath said.