This means the team will be without a full-time coach during its tour of Zimbabwe beginning June 11.
"It will happen in the next couple of months. I am not too sure if it happens before the Zimbabwe tour because it is not too far away," said Ganguly, who is on the advisory panel, alongside Sachin Tendulkar and VVS Laxman.
Post the short tour of Zimbabwe, India travel to the West Indies for a four-match Test series in July-August.
Talking about day-night Test cricket, Ganguly said it is a welcome change for the longest format. The BCCI has already announced that it will host its first-ever day-night Test against New Zealand in October-November.
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"Day night is a must and I think it will happen in India soon. I think Test cricket is the best form of the game. For any cricketer, it is the ultimate challenge and ultimate judgement of a player. It needs innovation and day night cricket is the best way forward," said Ganguly.
Is it a crown of thorns at the moment? "I don't think so," said Ganguly.
"Every job comes with challenges. I don't think it is a crown of thorns, whether you open in a Test match against the best fast bowling attack in the world or you are the BCCI president or the association president. Every job comes with challenges. I think BCCI is in a great position in terms of the way the game goes around in the country. I am sure he will take the team forward.