Thanks for your answer. Interesting theory. Me, as a noob, would think, that it is more interesting to sell players with a quality of x0 or x5, as they will take a longer time till they reach the next star. giving away a player with x4 and x9 would be a waste of quality as I could easily get a player with one more star (in my noobs head).

That brings me to another questions:

Is the gap of the market value of a x4 to x5 player (which has one more star) the same as the gap from a x5 to x6 player (which has no more star)? Shortly spoken: Wouldn´t it make more sence, to wait till the player has reached the next star, as he would have a much higher market value then?

Greetz!