R.I.P., Rick Grimes? Andrew Lincoln is set to exit the AMC hit drama The Walking Dead during the upcoming Season 9, according to a report from Collider. Lincoln, who stars as Rick on the hit zombie thriller, will reportedly only appear in a half-dozen episodes in Season 9 before leaving the show for good. To compensate for the loss of its primary star, AMC is reportedly preparing to offer Lincoln’s co-star Norman Reedus (Daryl) “substantial compensation” to stay with the show and assume the lead role. (AMC declined to comment when TVLine reached out for confirmation.) The Walking Dead is...