Manchester City, Juventus and Atletico Madrid are also reported to have had the Porto midfielder scouted during recent Champions League outings
Manchester United, Arsenal and Manchester City are among those monitoring Porto midfielder Yacine Brahimi, according to A Bola.
It is claimed that 11 clubs have had the Algeria midfielder scouted in recent Champions League outings, including a matchday six meeting with Leicester.
West Ham United, Monaco, Marseille, AC Milan, Juventus, Napoli, Atletico Madrid and Sevilla are the other clubs said to be keen on the 26-year-old playmaker.
Brahimi is unlikely to come cheap, though, as he is tied to a contract at Porto until 2019 and has a €60 million (£50.5m) release clause.