Brock Lesnar is retired from fighting in the UFC. He's making incredible money at WWE and he's working only 6-8 times a year, so I'm pretty sure he's all set.
But Jon Jones still called him out.
That tweet came out after Kurt Angle went on a podcast and talked about Brock Lesnar. He said, "I know he said that he's retired... the one fight he wants, and I don't know if it's ever going to happen, but he wants to go up against Jon Jones."
We could see a Lesnar return to UFC action, but it would be unlikely as he still needs to fulfill his suspension for PED's.