i think it would be good if they could set it up like a real trade agreement,
There is actually nothing stopping you from "trading" players at the moment, you just have to use the transfer market and make sure all the "traded" players sell for market value.
Someone offered me a trade last week, for example. The problem I see with trades of this kind is that someone usually loses. That's why I turned him down. With the transfer market you are more likely to get a fair price, sometimes you just need to be patient.
where if 1 club has some1 for sale another club could offer like one of there players and some cash or at the end of the season the lower clubs could offer there trade pick and stuff like that.
The type of system you want would make cheating too easy. Seriously, the transfer market may not be perfect but in my mind it is the perfect solution to an imperfect world.
Run of the Mill Canadian Manager