Television icon Tom Selleck, 79, isn’t ready to turn in his shield as Blue Bloods’ top cop after the popular crime drama was canceled by CBS despite soaring ratings, RadarOnline.com has learned. Selleck’s ego took a hit when the show was kicked to the curb, but sources claim he’s pulling out all the stops to prove network executives made a huge mistake! Insiders alleged in addition to Selleck’s bruised ego, the loss of his $200,000 per episode paycheck may create a severe cash crisis that could threaten his prized California avocado farm — and possibly his 36 year marriage to wife Jillie Mack …