The club's official accounts from last year show that the Yorkshire businessman received £933,000 - including a severance payment and bonus - for the 10-month period he was employed by the fallen Glasgow giants.
He also pocketed a profit after selling off his shares in the club to investors Sandy Easdale and Laxey Partners.
But Green says he was worth much more after helping to relaunch the company that owned the club after it was liquidated in the summer of 2012.
He told Sky Sports News: "When I joined Rangers I was the only employee, the only director, the only investor.
"I was on the same salary as [manager] Ally McCoist. But [former chairman] Malcolm Murray said that was too much and halved it.
"For the work I did at Rangers I should have had double.
"My salary was £360,000 a year. I didn't take 12 months' notice. I agreed with [former director] Ian Hart that I would take less money because I didn't want to penalise the club.
"The bonus was a bonus which was contractually in my contract and I was entitled to it."
Green had to resign his position in April 2013 when allegations of links to former owner Craig Whyte emerged, although he denied any wrongdoing.
The ex-Sheffield United chief exec did return to the League One leaders for an 18-day stint as a paid consultant last summer but was again forced out after a public spat with McCoist.
But the 60-year-old says he never wanted to leave Ibrox.
"I didn't want the severance pay," he said. "I would have liked to have stayed at Rangers but I was driven out of that club. I would have happily carried on at the club."
In January, McCoist has also signed off on a 50 per cent cut to his £825,000-a-year salary.