Arsenal have been linked with a move for Everton and West Ham United target Yacine Brahimi according to reports in Portugal.
Correio da Manha has claimed that the Gunners are "showing strong interest" to sign the 27-year-old.
The Algeria international joined Porto in the summer of 2014 from Granada and scored 28 goals in 117 appearances in all competitions.
With Porto needing funds to respect the Financial Fair Play rules, the attacking midfielder could be one of the many players to leave the club this summer.
Arsenal will be without injured Santi Cazorla when the season resumes in August and manager Arsene Wenger is desperate to add new players to his midfield.
Everton made a £33.6million offer to sign the player during last summer's transfer window but it was rejected by his club.