US private equity giant Apollo is closing in on an agreement to join forces with a group of foreign bidders for Morrisons supermarkets, tightening the consortium's grip on the grocery chain. Fortress, which is backed by Japanese investment giant Softbank, has teamed up with American businessman Charles Koch and the Canada Pension Plan Investment Board to agree a £6.3billion offer for the Bradford-based chain. Talks to bring Apollo on board are 'progressing' towards a conclusion, putting immense pressure on rival bidder Clayton Dubilier & Rice to walk away or top the existing bid. In vogue: Interest in supermarket chain Morrisons follows a swoop on Asda last year