I also believe that the player market should be limited as it is in real football. In other words, open the player market the first 5 days of a new season and the first three days of the second leg of the league. Players should not be bought or sold between those two open market periods, in addition, negotiation between teams should always be ongoing as they are during real football, then concluded and finalized in those open market days. Tokens should be paid also, In selling a player a minimum number of tokens per quality % and market price of a player should be set then a manager could negotiate up or down the tokens and the money.