The Hammers were in the market for a new midfielder in January.
David Moyes’s side managed to sign Tomas Soucek from Slavia Prague.
Sanson has been an almost ever-present for Marseille this season. He has made 26 top-flight starts, posting five goals and four assists.
Capable of playing in several midfield roles, Sanson is an all-action midfielder with an average of 1.4 successful take-ons and 2.2 tackles per game (Whoscored).
West Ham are said to still be keen on the player ahead of the summer.
The Hammers will be looking to find a long-term replacement for Mark Noble who turns 33 this year, while Declan Rice’s future at the club is uncertain.
Wolves, meanwhile, are also considering a move for the player.
Nuno Espirito Santo’s side could well enjoy another European campaign next season and will need to strengthen to deal with the demands of multiple competitions.
Le10Sport tip Sanson to leave Marseille at the end of the season.
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