Olympique Marseille transfers adviser Paul Aldridge is in contact with Manchester United and Manchester City.
Aldridge, a former Hammers director, was brought into OM to help move on players this summer - with the Premier League market a focus.
He has been working on the sale of Morgan Sanson, with the likes of Aston Villa, West Ham and Newcastle all offered the midfielder.
But Sanson isn't alone, says Le 10 Sport, with OM teammate Duje Caleta-Car also being made available.
The Croatia centre-back has been offered to both Manchester giants by Aldridge in recent weeks.