People familiar with White House thinking say President Barack Obama is likely to name top national security aide Denis McDonough as his next chief of staff.
Still, White House officials say the president has not made a final decision on the key West Wing post.
The 43-year-old McDonough currently serves as Obama's deputy national security adviser. He also advised Obama on foreign policy matters during the 2008 presidential campaign.
The people familiar spoke on the condition of anonymity in order to discuss the matter ahead of the president.