EX-world boxing champ David Haye and fellow heavyweight Dereck Chisora could face jail over Saturday night’s bloody post-fight brawl in Germany. The clash after Chisora’s defeat to WBC champion Vitali Klitschko piled shame on British boxing. Chisora, 28, was arrested Sunday at Munich airport and questioned about the altercation and an alleged threat to shoot Haye. Chisora was later released by police.