The Dutchman has a big job on his hands, with the current United side set to finish outside the top four and with their worst points tally in the Premier League era.
There is a expected to quite a bit of player movement, with the likes of Nemanja Matic, Edinson Cavani, Juan Mata and Jesse Lingard expected to leave.
A number of players have already been linked with a move to Old Trafford since the Ten Hag announcement, but the Mirror reports the Dutch coach is looking to add Chelsea midfielder N'Golo Kante to his squad.
The report adds that Ten Hag wants United's midfield to be more energetic, decisive and competitive, which as a result, has seen the club also linked with Barcelona's Frenkie de Jong and Monaco youngster Aurelien Tchouameni.
Ten Hag was recently asked if he would sign any of his current Ajax stars, to which told WeTalkAjax," “There is no agreement in place that would exclude me from taking players to Manchester United.
“Which Ajax players are interesting? I have very good players here, but that’s a non-issue.
“We now have to become champions and everything should be focused on that.”