Banks and direct lenders are going head-to-head to finance deals. : Silver Lake Management has lined up as much as $8.5 billion of debt financing for its buyout of Endeavor Group Holdings Inc., the talent agency and controlling investor in WWE and the Ultimate Fighting Championship. JPMorgan Chase & Co. is leading underwriters on a portion of the financing structured as a leveraged loan, according to people with knowledge of the matter. The makeup and amount of debt could still change, said the people, who asked not to be named because they’re not authorized to speak publicly.