The New York Times is reporting Donald Trump is expected to give Elon Musk — the world’s richest man — office space in the White House complex to run the so-called Department of Government Efficiency. Musk, who has billions of dollars in government contracts, was the largest financial backer of Trump’s campaign and has been regularly seen by his side at Mar-a-Lago since the election.

Meanwhile, tension is growing between Musk and former Trump adviser Steve Bannon. In a recent interview with an Italian newspaper, Bannon vowed to “get Elon Musk kicked out” of Trump’s inner circle. Bannon said, “He is a truly evil guy, a very bad guy.” Bannon has criticized Musk’s support of the H-1B visa program used by many tech companies to hire foreign-born workers.