Hammers chase highly rated midfielder
The midfielder played a major part in helping the Brussels club to last season’s title, and is set to play at the World Cup finals.
The two Manchester clubs, City, Chelsea and Everton have all shown previous interest in the 22-year-old.
Widespread reports in Belgium claim that Hammers boss David Moyes is keen on the player who has recently made a successful switch to centre-back from his normal defensive midfield role.
His current deal runs until 2021, but he is believed to have been promised a green light to leave this year if a suitable offer comes in.
West Ham have contacts with Anderlecht via the move of Cheikhou Kouyate in 2014.