London, April 22 -- Newly crowned Masters champion Rory McIlroy will have "unfinished business" when the Open Championship returns to Royal Portrush this summer, says R&A chief executive Mark Darbon.

Northern Irishman McIlroy, who won at Augusta National earlier this month to complete career Grand Slam, missed the cut when The Open was held at the Dunluce Links for the first time in 68 years in 2019.

On Tuesday, Darbon announced that this year's championship, which takes place from July 17-20, will be the biggest sporting event held in Northern Ireland, with 278,000 fans expected on the Antrim coast links.

"I think he's probably got some unfinished business here," Darbon told BBC Sport NI of McIlroy's chances.

"We're looking forward to ...