There's a profit stream to be had from Rangers' fans. Also, although prize / TV money is not great in Scottish Football, it is / could be virtually guaranteed for The Old Firm, with Champions League cash a bonus. If you're clever with money, get a talented young manager in, run a proper youth system, you could get Rangers International finishing 1st or 2nd in the Premiership with comparatively little outlay. Newcastle generate a lot of cash but it is very expensive to maintain English Premiership mid-table year after year. Rangers could be run on a comparative shoestring.