The Dutch international – who enjoyed a short spell with London rivals Chelsea in 2006/07 – was recently released by Sporting Lisbon, and is currently without a club.
Sam Allardyce is keen to strengthen his squad despite the transfer window having closed, and sees the experienced centre-back as a shrewd addition.
It is believed that talks between the club and the 31-year-old have begun, but as of yet it is unclear as to whether or not a deal will be reached.
The defender has earned a reputation for his tough tackling, ferocious approach, which has led to him being nicknamed ‘Khalid the Cannibal’.
As well as being a strong presence, he is able to operate at full-back, which is attractive to ‘Big Sam’.
Boulahrouz has attracted attention from a number of MLS clubs, but the lure of another shot at life in the Premier League may be a deciding factor.
The Hammers have also been linked with a move for former striker Carlton Cole – who they released over the summer – but a deal has fallen trough due to fitness concerns.
Ex-Liverpool midfielder Mohamed Sissoko has also been mooted as a potential target after being axed by Paris Saint-Germain, although it is thought that the Irons are not interested.
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