The Belgium international struggled to establish himself at Old Trafford under the Dutch coach, eventually leaving for Real Sociedad last summer
Adnan Januzaj has again taken aim at former Manchester United manager Louis van Gaal, criticising him for ruining his confidence and halting the Belgian's "progression".
The 23-year-old looked destined for a successful career at Old Trafford when he broke into the first team as a teenager under David Moyes.
He became a key part of Moyes' side and regularly impressed on the flank with his ability on the ball, but Januzaj subsequently struggled once the Scot was sacked and replaced by Van Gaal.