Since it appears you are actually asking a question and have temporarily unsnarked:
The son of Hank Greenberg is the man who brokered the deal between Pegula and the Wilson Estate. The article implies that the personal connection Pegula felt with Greenberg, because Greenberg's father was Pegula's hero, was the "seal the deal" element that led Pegula to hire Greenberg (who had previously turned down both John Bongiovi and Donald Trump, per the article) in connection with Pegula's purchase of the Bills.