Ok When you make a trade you post it in Pending trades just like this

Example:

Pats Trade
HB: Kevin Faulk 81 2 31
Pats 1st round pick


Jets Trade:
RB: Leon Washington 82 2 26
Jets 3rd round Pick

So make sure you have Position, Name, overall, contract length and also both GM's have to post they Agree to the trade or the trade wont get voted on by the Trade Council