Didn't he leave with the group? Have him walk into the room with Jess or Car-tali. If I'm right then Ace, Jess, Tali, Cia, Finn and Jack are all in the safe or somewhere in Jack's building. Noore is locked up in the basement, and Cole is talking with Eva outside. You could have John talk with Noore as she's about to be questioned by Tali.