Shamrock is the founder of the Lion's Den mixed martial arts training camp.
Brown made the announcement in Parliament at lunchtime on Wednesday.
Within moments of publication of the announcement by Eskom chairperson Dr Ben Ngubane that Mr Molefe was to return as Eskom’s Group Chief Executive, the issue was thrust to the centre of societal and political contestation.
“Old allegations have re-surfaced and new ones have been brought to light.
He had resigned from the company in November 2016 last following the release of the Public Protector's State of Capture report which showed that he had been in constant contact with the Gupta family.
His return was not well received by political party's and civil society.