Matthew Guy’s chief of staff has quit.

It comes after leaked documents revealed Mitch Catlin had asked a wealthy Liberal Party donor to make more than $100,000 in payments to his private marketing business.

Mr Catlin sent the contract to Mr Guy’s private email, asking him to forward it on to the donor.

Mr Guy insists the deal was never signed.

“Let me be very, very clear. There was no agreement, there was nothing signed,” Guy said.

Paul Sakkal broke the news with The Age and spoke with Neil Mitchell on Tuesday.

Press PLAY below to hear more about what’s alleged to have happened

Picture: The Age