Hull City have signed Basel winger Liam Millar for an undisclosed fee on a three-year deal and Manchester City defender Finley Burns on a season-long loan.
Canada international Millar, 24, spent last season in the Championship with Preston and scored five goals in 35 league appearances.
Burns, 21, has played once for the reigning Premier League champions and 37 games for Stevenage in League One in 2023-24.
The Tigers start the new season with a home game against Bristol City on Saturday.