The young United player was at Deepdale on Saturday and then spotted on Monday with the open training sessions at Deepdale. There was no word of any signing until today.
The left wing back was player of the season last year for the under 23's at Manchester United and the Premier League giants have allowed Fernandez to come out on loan for the season to Preston.
He will follow in the footsteps of Danny Wellbeck and David Beckham who also spent time on loan at Preston from Old Trafford. He will compete with Robbie brady for the left wing back slot.