Upton Park side to battle Emirates Stadium outfit in race for in-form centre-back.
West Ham are to join Arsenal in pursuit of Celtic defender Virgil van Dijk according to talkSPORT.
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The Dutch defender has impressed during his time in Glasgow and has been strongly linked with a move to the Premier League with Arsene Wenger apparently coming close to signing the former Groningen centre-back on summer transfer deadline day.
Hammers boss Sam Allardyce may see the Parkhead youngster as a possible replacement for contract rebel Winston Reid, the New Zealand defender being well into the final year of his current deal.
Celtic may hope that West Ham’s interest could start a bidding war with Celtic wanting at least £7m for the 23 year old.
Arsenal’s interest in Virgil van Dijk is perhaps with a view to ably replacing Thomas Vermaelen, who left for Barcelona in the summer, and to secure extra strength in depth considering the club’s recent run of injury concerns.