Fadiga is on the books of Belgian side Club Brugge at the moment and has a contract with them until 2020, according to The Sun.
The 17-year-old is the son of former Bolton Wanderers and Coventry City midfielder Khalilou Fadiga and operates as a winger.
The Belgian has been at Club Brugge since 2015 when he made the switch after leaving Belgian giants Anderlecht.
Fadiga is a very talented and promising youngster who has a lot of skills and is very quick. The 17-year-old would indeed be a very good long-term signing for Everton or Southampton.
Both the Toffees and the Saints give chances to young players, and although the Belgian youngster should not be expected to break into the first team anytime soon, he could prove to be brilliant acquisition in three or four years’ time.
Everton are aiming to break into the top six of the Premier League this season, while Southampton will be challenging for the top 10.