Potter had an ugly fall out with Farah and club management and was sacked at the end of last season after two difficult years in charge of the joint-venture club.
He claims he lobbied the then board and CEO Grant Mayer to offer the NSW hooker a two-year deal back in 2013, but says his pleas were ignored.
“My input was dismissed,” Potter told the Daily Telegraph.
“I thought that was the right thing to do for Robbie and the club and if he was still going well at the end of the two years, you could have kept him on.
“Age becomes no barrier. But you don’t sign a 30-year-old for four years, I don’t think.
“I wasn’t in control of the tenure of most of the players.”
The Tigers, who are in the running for the dreaded wooden spoon, this week told Farah his services are not required next season.
Farah has two years to run on his back-ended deal and stands to receive $1million a season in 2016-17.
That means the Tigers will almost certainly have to pay a chunk of Farah’s wages if a rival NRL club decided to pick up the 31-year-old.
Potter was scathing in his assessment of Tigers management during his tenure.
“I think I finished up with a group of people who were very divisive,” he said.
“Not all, there were some very lovely people at Wests Tigers, but it was an organisation that had so many issues and needed so many changes.
“I have never been at a club like that but it was out of my control. I wasn’t able to assemble my own squad as such apart from a couple of players.
“… Call it naivety, I don’t know what you call it. They were trying to play ‘Fantasy League’ with real players but other people’s money instead of looking at it as a business.”
Potter says he regrets taking the Tigers job but believes giving his replacement Jason Taylor full control over recruitment is a positive step forward for the club.