Trade Button Greyed Out
 

I just got the game and want to do a Classic save but in control of all 31 teams. I made Gm's for every team and assigned them, have commissioner mode on 1 GM. For some reason the trade button on all the GM's grey's out for no reason and I can't figure out why. It will show up 1 day for a couple of seconds and when I go back I can't click on it anymore. I want control of all these teams to be able to make whatever trades I want so I can do some experiments. Any help would be great! Thanks!

Switch to the commissioner account to make the trade - select the teams you want to trade, set it up, the choose "Force Trade" from the action menu.