In case of Salah, letting him leave was understandable. At the time he basically looked like Egyptian Walcott. De Bruyne, on the other hand, was very special from the moment he first kicked ball for this club. He was our best player during that 2013-14 preseason, and also man of the match in his PL debut game against Hull City if my memory serves me right. What happened after that game remains a mystery cause he was completely sidelined, played one crappy cup game and that was it.