Sting in TNA? No, he's not retired he has said he wants 1 Mania before retiring! He said it on his TNA Doc. He is in a negotiation faze with WWE and will likely be in WWE for WrestleMania 31. TNA announced he's not employed and why would TNA not bring him back now? it's been 2 months. He wrestle 3 times in a month, doesn't travel how tired can he be?
Sting will be in WWE from my point of view he should, End his career with a standing ovation from Mania 31 crowd.