Chicago business executive Todd Ricketts is expected to accept the role of Republican National Committee finance chair, according to four people familiar with the matter.

A formal vote was expected to happen Tuesday. Ricketts is working closely with the White House and RNC leaders on the appointment, those people said, speaking on the condition of anonymity to describe private conversations.

Casino mogul Steve Wynn, a friend of President Trump's, stepped down Saturday as the party's finance chair after dozens of people told the Wall Street Journal that Wynn engaged in sexual misconduct for decades. The newspaper reported that he paid one manicurist a $7.5 million settlement over claims that he forced her to have sex. Wynn denied the claims.

Ricketts, who last year was Trump's pick to be deputy secretary of the Commerce Department, withdrew over a dispute with the Office of Government Ethics, citing his financial portfolio as too difficult to disentangle.

One of his brothers is Nebraska Gov. Pete Ricketts (R), who was elected in 2014.

Todd Ricketts also was recently a finalist to become president of the Heritage Foundation, a conservative think tank.

Ricketts, a son of TD Ameritrade founder Joe Ricketts, is also on the board of the Chicago Cubs and TD Ameritrade. The Rickettses are large donors in Republican politics and have long-standing relationships with GOP congressional leaders.

In the past five years, Todd Ricketts has given more than $493,000 to federal candidates and super PACs, according to federal filings. His parents contributed $28.4 million to federal political committees in the same period.

Anu Narayanswamy contributed to this report.