When Derek Quinlan went into the National Asset Management Agency, he was assigned the number one. This was to reflect the fact that the state agency, set up in 2009 as the banking system was crumbling, considered him to be its largest client. A prolific dealmaker, Quinlan’s loan connection was the largest in the state when all of his personal loans, company loans and various syndicates he was involved in were collectively added up. Quinlan-associated entities owed Nama €1.86 billion on day one, when he was first called to a meeting at the agency’s headquarters in Treasury Buildings in Dublin’s…