President-elect Donald Trump will nominate Republican US Representative Mick Mulvaney to be director of the White House Office of Management and Budget, the Wichita Eagle newspaper reported on Friday, citing a senior transition official.

An announcement naming Mulvaney of South Carolina is expected to be made on Monday, the newspaper said.

A senior transition official told Reuters that Mulvaney is a leading candidate for the OMB post.

David Malpass, former chief economist with investment bank Bear Stearns and a senior Trump adviser, is also being considered for the job, which requires Senate confirmation.

The OMB director plays a lead role in formulating budgets that reflect the administration’s legislative priorities and are a blueprint for detailed spending and tax bills the president wants Congress to consider.

Mulvaney, 49, is a fiscal conservative and was an outspoken critic of former House of Representatives Speaker John Boehner, who resigned in 2015 amid opposition from fellow Republicans who were members of the House Freedom Caucus.