Jose Mourinho apparently refused to shake Arsene Wenger's hand after Chelsea's 2-0 victory over Arsenal on Sunday because the Frenchman had refused to acknowledge a Christmas card. Mourinho has reportedly used the festivity card to apologize to Wenger for labeling him "a voyeur" in a recent bust-up, BBC Sport reported on Tuesday. The Portuguese boss sent Christmas cards to all his Premiership coaches, but reports claim Wenger's card was special, as it aimed to end their public row. However, Mourinho apparently felt insulted after a member of his coaching staff was approached by an Arsenal opposite number to verify whether the message was truly a goodwill gesture or a publicity stunt. Wenger, who recently threatened legal action against Mourinho, snubbed the former Porto manager who reputedly attempted to shake hands with him before kick-off on Sunday.