The former Real Madrid winger joined the Red Devils in the summer of 2014 for £60 million making him one of the most expensive transfers of all time.
Di Maria had a very disappointing spell at Old Trafford and now, almost four years after his departure, he believes former United manager Louis van Gaal was to blame for his failure.
He struggled to live up to the hefty £60 million price tag and was only able to score four goals in his 32 appearances with Manchester clubs.
In the summer transfer window of 2015, Di Maria departed for Paris Saint-Germain intended to improve significantly and express his abilities even more.
According to the man himself, the main reason behind his disappointing spell with the Red Devils was the fact that Van Gaal didn’t allow him to express himself freely.
“I only stayed for one year. It was not the best time of my career, or rather I was not allowed to spend my best time there,” he said in an interview with France Bleu.
“There were complications with the coach at the time.
“But thank God, I was able to come to PSG and demonstrate again who I was.”
Di Maria will return to face some of his former teammates next month in an exciting Champions League last of 16 encounter.
The French side have had a very tough group in the Champions League with Napoli and Liverpool but managed to make it through to the knockout stages with a 4-1 win against Red Star in their last group match.
Angel di Maria didn't hold back when talking about Man United! 😬 pic.twitter.com/jowUCxLENg
— Goal (@goal) January 16, 2019
Although Man Utd’s European aspirations may differ from those of the French champions, Di Maria does not want to undermine the challenge they could face from newly appointed Solskjaer’s side.
“We still have matches before facing Manchester,” he added. “They have changed with their new coach and they have not lost a match.
“I think we started the year not so well in the Champions League, but we put the situation right and we finished top of the group.
“It was complicated. Ever since the draw, it was said that it would be difficult to reach the round of 16 and we were almost eliminated, but we played a big home game against Liverpool and also against Red Star Belgrade – two big, decisive matches to qualify.
“Now, we must think of ourselves and nothing but ourselves. If we do things well, everything will be fine.”