Manchester United star Pereira joined Valencia on loan a year ago in a decision that irked Mourinho.
The Red Devils boss said at the time: “Andreas Pereira was a personal decision that I don’t agree with.
“A decision I don’t think honestly is the best decision for him, a decision that disappoints me a little bit, because I think he has the potential to be here fighting for a position, for opportunities, and fighting to be a Manchester United player.”
But Pereira has now explained why he chose to leave Manchester United, telling the National: “United now have a better player because I went to Valencia.
“I played more minutes than I would have played at United.