If the NT manager doesn't want my player, I couldn't care less, because I trained him with salary efficiency in mind (he will be useful for my club).
What I'm saying is that most NT managers would chose monoskilled over well balanced players. That encourages farming and inefficient training, but if you take into account things like salary and experience, I think it is possible to build a good NT out of players who haven't been trained specifically for the NT. I don't care if my player is selected for the NT, I will try to train a good all around player, and I know most NT managers are too narrow minded so I'm not expecting him to go to the NT.
"Air is beautiful, yet you cannot see it. It's soft, yet you cannot touch it. Air is a little like my brain." - Jean-Claude Van Damme