Brock Lesnar returns on WWE Raw

Brock Lesnar returned in the final segment of Raw, laying out John Cena with an F-5 to end the show. Cena was doing a promo where he wanted to challenge the Rock to a rematch and Lesnar emerged instead.

Lesnar didn't do any promo and offered to shake Cena's hand, pulling him in for the F-5.

Who would you have the most interest in for Fabricio Werdum's next title defense?