I agree with this idea. It will make people change when they put there players on the market and also makes sure that the people bidding on them are real and not helping them buy other players in the process.
Also its not like you need to wait that long till you get the money within 3 days usually the last day is the one that matters in terms of the price jump of a player. This also will cut down a small margin of day traders as they have o wait longer o make their next investment.
You got to know when to hold em, know when to fold em, Know when to walk away and know when to run. You never count your money when youre sittin at the table. Therell be time enough for countin when the dealins done.