There may be three more potential candidates to replace The Office’s Michael Scott.

Sources say Men of a Certain Age star Ray Romano, Doctor Who alum Catherine Tate and Boston Legal vet James Spader will make appearances in the hourlong season finale airing in May, along with previously reported Ricky Gervais, Will Arnett and Will Ferrell.

Ferrell would be wrapping up his multi-episode arc on The Office in that episode.

Arnett recently booked a role on NBC’s Lorne Michaels pilot opposite Maya Rudolph and Christina Applegate.

The Office seventh season finale airs May 19.