The much anticipated announcement came after Kuyt captained his club to an emotional title victory with a 3-1 win over Heracles Almelo, and he led fevered celebrations in front of some 150,000 people in Rotterdam on Monday.
Twente Enschede got a 3-1 derby win at Heracles Almelo to move top of the Dutch league on Sunday as leaders PSV Eindhoven were held to a goalless draw at Utrecht.
Twente Enschede struck twice in the last eight minutes to win 2-1 at Vitesse Arnhem on Saturday and join Dutch league leaders PSV Eindhoven on 58 points.
Luuk de Jong's early goal set PSV Eindhoven on their way to a 3-1 victory at Excelsior in the Dutch league that moved them to within one point of leaders Ajax Amsterdam
PSV Eindhoven will miss striker Luuk de Jong when they entertain Atletico Madrid in the first leg of the Champions League last 16 on Wednesday.
United are unbeaten in all competitions since Solskjaer replaced Jose Mourinho in December and their improvement is down to the Norwegian's insistence on an attacking style of play, as opposed to the defensive fare served up by his predecessor.
Ajax Amsterdam registered a 4-1 win at De Graafschap, their first title since 2014 and a record-extending 34th overall completed the double after they won the KNVB Cup earlier this month.
Atletico Madrid got their La Liga campaign up and running in less than convincing fashion when Antoine Griezmann's deflected free kick secured an edgy 1-0 win at home to promoted Las Palmas on Saturday.
A summary of the results of the football matches played across Europe on Sunday