Morgan Whittaker is probably the most high profile Rangers transfer link of the window so far. The 23-year-old is certainly the most expensive. Rangers have reportedly had a £7m offer for Whittaker thrown out by English Championship side Plymouth Argyle. That’s a hefty amount of change for the forward, who netted 20 goals for Plymouth after making the permanent switch to the side last season. Rangers interest in Whittaker is believed to be ‘legitimate’ with the winger one of three names mentioned by Heart & Hand. But after the latest comments from Plymouth boss Wayne Rooney, and Rangers chairm…