Chelsea are eyeing Borussia Dortmund fullback Lukasz Piszczek.
Blues see the Pole as a replacement for departing right-back Jose Bosingwa.
Inter Milan's Brazilian defender Maicon is another option although not Di Matteo's favoured choice, says the Daily Mail.
Chelsea were beaten to the signature of another right back who impressed during Euro 2012 in Czech Republic's Theodor Gebre Selasie, who has signed for Werder Bremen.
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