Luftstalag14
Culé de Celestial Empire
To be honest, if I was him I would have absolutely no interest in negotations. Appoint reliable personnel who are responsible of getting the absolute best deal possible, in this case even his father is involved. They believed they could get 10m, they asked for it. I can't see Leo asking "papa, please I need 10m".
It's not too uncommon that players who quit lose out on much of their fortune because they don't know how to take care of it.
Agreed on the second paragraph but players are like every other human being, seeking out the best for themselves, or greedy shall we say. I can see Messi wanting to horde some rich and wanting the 10m bonus, but you could be right, it could be a demand from his father. However, demands like private box for him and Suarez, private plane flights to Argentina etc. were definitely from him, I am sure.