The missive arrived at the headquarters of the Cricket Association of Bengal today, according to top CAB sources.
Meanwhile, CAB Joint Secretary Saradindu Pal said Ganguly had opted out of the tie citing 'unavoidable personal reasons.'
"Last Friday, a day before the national selection committee meeting for picking the squad for Pakistan, Sourav informed us that he wanted to stay away from the Ranji matchdue to 'unavoidable personal reasons," Pal said.
"Considering the fact that Ganguly had responded to our call to play for Bengal whenever the side needed, we agreed to his request. Sourav also told us that he will turn out forBengal in future matches," Pal said.
The CAB Joint Secretary claimed that since Saturday, after the selection committee meeting, he had frantically tried to contact Ganguly but could not get through to him.
Asked whether a fit player could stay away from Ranji Trophy duty at his own sweet will, Pal said "in the past, he had played for us whenever he was available. Moreover, werespected his wish this time as he cited personal problems."
On asked whether the CAB should have forced him to play, Pal said "Ganguly is no Manoj Tiwary (a Bengal all rounder)."