Former world heavyweight champion Lennox Lewis has issued a warning to David Haye over a possible fight with either of the Klitschko brothers.
Haye retired from boxing last summer after losing a title bout with Wladimir Klitschko on points, but the British boxer has vowed to return and fight the same opponent or his brother Vitali.
However, Lewis has claimed that Haye should secure a fight against other boxers before he steps into the ring with the one of the Ukranian brothers.
"He should come back, but he should not think about the Klitschkos right now," he said.
"He should beat a couple of other people, so people actually think, 'yeah, you know, he can do it this time, he can beat a Klitschko'.
Vitali Klitschko will face London fighter Dereck Chisora in Munich this month.
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