Porto coach Julen Lopetegui has revealed that Spanish forward Adrian will be allowed to leave the club this summer.
The 27-year-old joined the Portuguese outfit from Atletico Madrid last summer, but injury restricted him to just nine league appearances last term.
Lopetegui has admitted that the forward no longer features in his plans as he prepares for the new campaign.
"It's clear a decision has been taken and now we have to see what is best for each party," the Porto boss told Superdeporte.
"Sometimes when things are not going well, we're all a little guilty."
Adrian, who has scored once in two caps for Spain, still has four years remaining on his Porto deal.