President-elect Donald Trump's incoming White House Chief of Staff Reince Priebus, second from right, attends a meeting with former White House Chiefs of Staff in the office of current White House Chief of Staff Denis McDonough at the White House in Washington, Friday, Dec. 16. From left are, Andrew Card, Bill Daley, Samuel Skinner, Priebus and Rahm Emanuel. | AP Photo Priebus to join former chiefs of staff at White House on Friday

White House Chief of Staff Denis McDonough will host his successor Reince Preibus for lunch at the White House on Friday.

John Podesta is expected to be there too, as will about nine other former chiefs of staff, according to a White House official. It’s part of President Barack Obama’s instructions that his administration facilitate a smooth transition. It’s similar to the lunch that former George W. Bush chief of staff Josh Bolten hosted for Rahm Emanuel, the first to serve Obama in that post, in 2008. They’re both planning to be there, too.

Other expected attendees include Jack Lew, Bill Daley, Pete Rouse, Andy Card, Samuel Skinner, Ken Duberstein and Jack Watson.

