I can totally understand Ruben wanting a move up the pyramid, he gave us three good years, and he was improved greatly by our coaching/fitness staff, which I think he appreciated. And was at an age where he needed to make some money out of the game.
Nemane however has had one decent season with us, because of LW. I think he may be in for a shock when moving on, to find things maybe not as easy to fit in to his style of play, and he certainly seems a confidence player, so if teaming up with a manager who doesn't do the arm round the shoulder bit, he could find himself in the wilderness at his new club. He is also younger than Ruben, with time to improve through the leagues with Notts. As much as I would have liked to see that happen, as with Ruben, the club has shown that everyone is replaceable, with better, and not always at a massive cost. After all there are lots of 10 minute wonders out there