Philip Green, the British retail tycoon stalking Marks and Spencer, said Sunday shareholders had just days left to decide whether to back his take-over proposal for the troubled retailer.
Stuart Rose, the new chief executive of the food and clothing chain, is due to unveil a recovery plan for the business on Monday which is seen as crucial to its attempts to see off repeated overtures from Green.
Asked whether 400 pence per share was his final offer, the retail magnate said: "As far as I'm concerned four pounds is the price."
If investors decided to back Rose instead of his own proposal, then "we're off to the beach", he added.
"My plan is not to sit around for too long. So far as I'm concerned, within 24 or 48 hours of Monday morning, it will be make your mind up time in terms of the shareholders," Green said in an interview with BBC television.