Cincinnati Bengals tight end Tyler Eifert is currently on injured reserve with a troublesome back injury that has required three surgeries. But that’s not the extent of what’s illing the injury-plagued Pro Bowler. According to ESPN’s Dan Graziano, Eifert just recently had surgery to remove a cyst in his knee. “Bengals TE Tyler Eifert, already out for the year due to back surgery, had another procedure recently to remove a cyst on his knee,” Graziano reported. “Eifert is working to get healthy, as he is eligible for unrestricted free agency at the end of this season.”