Before leaving for Granada, Pereira revealed he held talks with United manager Jose Mourinho about the loan switch.
"Mourinho told me that he liked very much my style of play, which he liked a lot in preseason. He wants to see how I play here in Spain and wants me to come back in the coming season to play for him," Pereira told GloboEsporte.com.
Pereira admits missing out on Brazil's Olympics squad was a blow.
"I was sad at the beginning with the selection. Of course, I wanted to be there. But it was not to be, you know? I think God has saved other things for me.
"I sent messages of congratulations to everyone else. One day you're not together, on the other you can be together and be 'the guy'. God willing, there will be other opportunities."