Rudy Giuliani

The former New York mayor and U.S. attorney is reportedly on Trump's shortlist to replace Comey. A source close to Trump confirmed to NY Mag's Olivia Nuzzi that Giuliani is being considered for FBI director. However, before that tip, Giuliani told Nuzzi and The Atlantic's Rosie Gray: "I am not. I'm not a candidate for FBI director. The president's not gonna ask me, and I'm not gonna be FBI director."

Giuliani was in D.C. last night, having drinks at Trump International Hotel. When asked if he'll be meeting with the president today, he said, "If I am, I wouldn't say."

Chris Christie

The New Jersey governor is not without controversies of his own, but he was one of the first Republicans to endorse Trump in 2016. Earlier this year, Trump appointed Christie to lead his opioid and drug abuse commission.

Andrew McCabe

McCabe is currently serving as the acting FBI director in Comey's absence. He has been Comey's deputy since Feb. 2016 and has worked on various issues like interrogation, counterterrorism, and national security. His biggest setback: His close ties to Comey and his participation in the Russia investigation and Clinton email investigation, which was cited as the reason for Comey's termination.