I'm going Andrei Fedosov. He is ranked ahead of Haye in the WBA. He recently won the ESPN HW tourney & he is #8 in the WBA & Haye is #10. He is not a big threat to Haye but he is better than de Mori. Malik Scott could be another name to consider...
IIRC, Haye said that it won't be Whyte 100%.
Haye can't afford for people to start seeing him as ageing fighter. He needs to continue KO streak, so I guess next opponent won't be from top 20.