The defender's representative does not exclude a move to the Premier League as his client is hoping to find first-team action away from Porto
The Portugal Under-21 international is highly expected to leave Porto in the transfer window following the €13 million [£11.3m] signing of Santos' Danilo.
Lopes returned to Porto from a season on loan at Betis with hopes of securing a place at the Portuguese champions but has not featured for the club in the pre-season.
Betis and Zaragoza are believed to be targeting a loan move for the 24-year-old, but a report Spain's daily newspaper AS claims Fulham are weighing up a €1.5m [£1.3m] bid for the player.
Questioned about a potential move to Craven Cottage, Lopes' representative did not rule out a move to Craven Cottage as the defender is looking to get playing time.
"His wish is to play at Porto, if that cannot happen, then Porto must find the best solution for him," Artur Fernandes told Goal.com.
"No offer has yet been made and any club who want him must contact Porto first."