Erik ten Hag has made his first signings since taking charge, with Tyrell Malacia arriving from Feyenoord before Christian Eriksen agreed to join on a Bosman free transfer, following the expiration of his contract at Brentford.
A deal has also been confirmed to buy Ajax defender Lisandro Martinez, although some details are still outstanding before the Argentina international is officially unveiled as a United player.
There have also been plenty of outgoings too so keep track of all of the business in our handy guide.
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* = Martinez deal still subject to UK visa requirements, medical and personal terms being finalised.