The club have appointed the former Leeds United boss as their new manager as they look to return to the Premier League
Garry Monk has been confirmed as the man to replace Aitor Karanka as Middlesbrough's new manager.
Karanka was sacked by Boro chairman Steve Gibson in March and replaced by his assistant Steve Agnew for the remainder of the Premier League season.
How footballers spend their Holidays
Agnew was unable to stop Boro dropping into the Championship, though, with one win from his 11 games in charge.
Boro opted against appointing the 51-year-old on a permanent basis and have instead turned to Monk after he impressed with Leeds United in 2016-17.