Simon Cowell has offered Rita Ora a £1.5million deal as he pulls out all the stops to sign her for The X Factor. In an “extreme charm offensive” the show boss is also promising the singer use of his private jet and “unlimited” clothes. Rita, 24, turned down a judging role in March, but is now said to be tempted after pal Nick Grimshaw joined the panel. An ITV source revealed: “Simon is throwing the kitchen sink at this to get Rita on board. Having Grimmy on the panel is a bonus but it is not