Haye praised Klitschko, stating he was a "brilliant fighter", but said the reason for his own poor performance was
a broken toe.
He also said that other factors had affected him at Hamburg's Imtech Arena.
"There were a lot of shenanigans," added Haye, who lost his WBA title to IBF and WBO title holder Klitschko.
"We had a dodgy referee that let him get away with all sorts of infringements. They also sent me down [to the ring] through the crowd instead of down a barricaded ringwalk. I was getting trampled by people. There were loads of little things behind the scenes.
"But I thought, even if the ref is dodgy I'll find a way to win somehow. But he was too good on the night."
Haye's manager and trainer Adam Booth also vented his anger at Chicago referee Genaro Rodriguez.
"I'm disgusted with the referee," he said. "Absolutely disgusted. Counted him [Haye] when he got pushed to the canvas instead of saying something. I let my feelings be known to him at the end," said Booth.
Bermondsey-born Haye, who had planned to fight once more before his retirement in October, said he would consider a rematch.
"Listen, will he want to give me a rematch when I'm 100% fit? I don't know," Haye said. "If not, then I don't know. I really don't know. I'd love him to give me a rematch.
"If he couldn't knock me out on one leg, pretty much, then how about when I'm fit?
“Broken toe 3 weeks ago, meant I couldn't shoot right hand like I'm used to”
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