The billionaire Issa brothers have made an offer which they hope will help get Asda's £600m deal with the Co-op approved.
The businessmen, along with their private equity partner TDR Capital, have proposed selling 13 petrol stations in a bid to persuade the Competition and Markets Authority (CMA) to back the deal.
Earlier this month the watchdog warned that the deal could result in higher prices or less choice in 13 locations.
