This change is to prevent the upselling from one account to another for creation of mutants.

In addition to that, a single player will only be able to be directly transferred through Negotiations one time per season.
This is good and will help to finish that trick.

The Negotiations Window will be open from the 22nd to the 28th day of a Season. Making or receiving offers for players will not be possible outside of the window.
This gonna be the end of negotiations as a TE feature .
No one will spend 20-30 tokens to buy a player at the end of the season.

For God's sake, does anyone of you playing seriously TE ?