The transfer eclipses Jack Grealishâs ÂŁ100m move to Manchester City in 2021.
The Old Trafford club announced on Tuesday lunchtime that key midfielder Christian Eriksen would be out for three months.
United moved quickly to add midfield cover after Christian Eriksen was ruled out for three months
Ziyech has seen his hopes of a transfer to PSG break down at the last moment with the Ligue 1 giants left fuming after a major Chelsea failure