Kovac, 31, could face the Hammers when they take on Basel in a pre-season friendly on July 13.
Lying down on the job: Radoslav Kovac never really settled at Upton Park
Newcastle have circulated winger Wayne Routledge's name to clubs after he failed to complete his move to QPR.
He could yet return to QPR but they have yet to follow up last season's loan deal with a permanent offer.
Fresh blow for Tottenham in their bid to block West Ham's Olympic move Nolan in line for captaincy if Parker quits, says new Hammers boss Allardyce
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