Landing LeBron James will mean millions of dollars in economic benefit to Cleveland and Northeast Ohio, Cuyahoga County officials said.

The return of the star forward to his hometown Cleveland Cavaliers will have a $500 million a year impact on the local economy, with a boost from additional ticket sales and other spending, County Executive Ed FitzGerald said today. The 2016 Republican National Convention in the city will bring an additional one-time windfall of $200 million, he said.

“It generates real money for the local economy,” FitzGerald, a Democrat running for governor this year, said in an interview after a press conference in Cleveland.

James, 29, played for the National Basketball Association’s Cavaliers for seven seasons before leaving in 2010 for Miami, where he helped lead the team to a pair of championships. He said on July 11 he was returning, three days after the Republican National Committee announced that it was choosing Cleveland over Dallas to host its convention, which FitzGerald has said could bring 50,000 visitors to the region.

Based on calculations by the Cuyahoga County Fiscal Office, James’s return will increase the benefit from Cavs games alone to about $268 million. Average attendance increased from about 12,000 before James joined the team to about 20,500 during his final season, the county said. Although attendance has slipped, officials expect sold out games next season with James on the court.