The Dunder Mifflin watercooler is abuzz with news that Will Arnett has signed on to guest star in May 19 season finale of The Office.

The development, first reported by EW.com, is sure to catapult the Running Wilde star to the top of the short list of possible successors to Steve Carell.

NBC, meanwhile, is confirming that Ricky Gervais will reprise his role as original Office manager David Brent for a second time this season. Gervais — who let news of his return engagement slip last week during a BBC Radio 1 interview — will join Arnett in the finale.

Ironically, back in February Gervais publicly endorsed Arnett for the top Office job. “Had a little meeting with NBC about various things,” he wrote on his personal blog, “and recommended Will Arnett for a regular in The Office. Thoughts? I think he’s amazing.”

Did NBC take his advice? Speculate away in the comments section!