The move ends a long-running boycott of Kelly by Trump, after they clashed bitterly during the first Fox News Republican debate.
Asked by Daily Mail Online whether he was ‘solidly committed to debating on Thursday’, a campaign spokesman replied simply: ‘Yes.’
The decision by Trump comes after he wondered out loud at a campaign rally about whether he should attend.
Speaking to supporters in Oklahoma City, he said the debates ‘seem like a terrible waste of time’ Business Insider reported.
Read more: Daily Mail