Louis van Gaal previously stated he would like to keep the Argentina international at Old Trafford this summer, but is now resigned to losing him ahead of the upcoming Premier League campaign.
Portuguese newspaper A Bola reports that the 27-year-old was snubbed by club captain Luisao during yesterday's 2-1 defeat to New York Red Bulls.
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Nicolas Gaitan is reportedly unhappy at Benfica
The veteran centre-back was substituted late on during the game and apparently offended his team-mate by passing the skipper's armband to Andreas Samaris, who has been at Benfica for just one season compared to Gaitan's five.
It is added that the Argentine is now considering his options, and United could now take advantage of the situation by launching a bid.
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