Venture capitalist Mark Carnegie and Wilson Asset Management chairman Geoff Wilson are in discussions to see if they can extract a better offer from Nine for radio broadcaster Macquarie Media.

Mr Carnegie has been widely expected to follow his long-time friend John Singleton and vote in favour of Nine’s $1.46 per share offer for the remaining shares in Macquarie it doesn’t already own. Mr Singleton accepted the offer on Tuesday, taking Nine’s stake to 87.05 per cent, just shy of the 90 per cent it needs to compulsorily sweep up the rest of the shares.