Former FSA chief executive Hector Sants is in talks with Deloitte to become an equity partner, according to reports.
Sky News reports that Sants will not make up his mind until the end of the month, but risks a conflict of interest if he joins the accounting firm just months after leaving the FSA.
Sants left the regulator in June ahead of the abolition of the FSA in April 2013, when he was due to become deputy governor of the Bank of England. He first announced his intention to quit in 2010 before changing his mind.
Sants has continued to receive his £500,000 FSA salary plus benefits since he stepped down in June, but the payments are due to end at the end of the year.
Former FSA conduct business unit managing director and former director of enforcement Margaret Cole joined PricewaterhouseCoopers after leaving the regulator earlier this year. Former FSA managing director of supervision Jon Pain joined KPMG last year.