Slaven Bilic made the full-back the captain of the Croatia national team in 2009 and the pair remain close, opening the door to a possible January transfer
West Ham United are reportedly lining up a move for Shakhtar Donetsk full-back Darijo Srna, according to the Daily Star.
Srna, 34, has been with the Ukrainian side since 2003 but looks set to leave during the January transfer window.
The Croatian is on Barcelona's shortlist as a short-term option at right-back but if that move falls through West Ham want to sign him.