French side AS Monaco are eyeing a lucrative summer move for Benfica defender Ezequiel Garay, [football] direct news understands. The Argentine centre-back has been a long-term target for Manchester United both under Sir Alex Ferguson and new boss David Moyes but interest in the defender has gained pace in recent weeks. The 27-year-old who first came to prominence when he joined Spanish giants Real Madrid has been impressing for Portuguese side Benfica for some time and has played a massive part in their Europa League campaign. It is now understood that the defender will be available for sale as his current deal is due to expire next summer and [FDN] understand that Ligue 1 side Monaco are ready to make a summer move. Boss Claudio Ranieri is keen to bolster his defensive options as the the likes of Eric Abidal edge closer to retirement and the Italian boss sees Garay as the perfect signing.