According to TYC Sports, Manchester United had already scouted Fernandez on three occasions before making their fourth trip to observe him in action Friday night.
From a distance, Fernandez beats the Fortaleza goalkeeper after the ball comes to him from the edge of the box.
Even if United's interest in Fernandez is only a ploy, the player has little choice but to make an impression in front of the United scouting team.
This summer, Manchester United and Real Madrid are expected to battle for the Argentine midfielder.
Release clause for the youngster, 21, presently stands at €20 million, but that might soon jump to €5 million.
United should look for lower-cost replacements for Declan Rice, whose transfer fee is expected to be in the vicinity of £100 million.
Even more so if our transfer budget is reduced as a result of our failure to reach the Champions League final four.