Ruben Amorim has been appointed as the new Manchester United head coach and will join on November 11, once he has fulfilled his obligations with Sporting.
Amorim has signed a contract until June 2027, with the option of a further year, and will take charge of his first United match at Ipswich on November 24.
United have paid Sporting an extra €1m (£840,000) on top of his €10m (£8.4m) exit clause for an early release from his 30-day notice period.
He replaces Erik ten Hag who was sacked last month while Ruud van Nistelrooy will continue to take charge of the first team until Amorim joins.
United host Chelsea on Sunday. It has not yet been decided if Van Nistelrooy will be part of Amorim's coaching staff.
Who is Amorim?
A former Benfica and Portugal midfielder, Amorim retired as a player in 2017 and two years later took up his first managerial job at Braga.
The Portuguese then joined Sporting in March 2020, establishing himself as one of Europe's most sought-after young coaches, twice guiding the club to the Primeira Liga title.
Amorim has also won the Taca da Liga - the Portuguese League Cup - on three occasions, twice with Sporting and once with Braga.