Following Jason “Mayhem” Miller’s opponent confusion, Luke Barnatt has hit back, calling him “Eminem’s retarded cousin” in a recent Instagram post.

It was announced yesterday that Miller was set to emerge from his retirement, having signed with Italian-based Venator FC to face Middleweight champion Luke Barnatt on May 21, 2016 in Milan, Italy.

Barnatt won the Venator belt back in December at Venator FC 2, defeating Mattia Schiavolin with a rear-naked-choke in the fourth round.

The video of Miller announcing his fight with Barnatt was highlighted by “Mayhem’s” confusion over his opponent, promoting a fight with 38-year-old UFC Heavyweight Josh Barnett instead of his actual foe, Luke, 27.

Taking to his Instagram account, Barnatt wrote: “May 21st, Milan, Italy 🇮🇹 My craziest challenge yet… I’ll be taking on Eminem’s retarded cousin, I’m ready to make sure my belt doesn’t go back to 8 mile.”