☆Reason why it should be implemented 

-->sometimes people are not able to come online together which will stop them from completing there trade

--> Some people are busy/inactive in game because of which they are not able to do trades

☆By this they can do the trades through forum aand they dont hve to come online at same time

POSSIBLE WAY TO DO THIS

1)  (There will be a entirely new section of trade just like inbox) where will go a notification of trade req from XYZ on forums after which the user may or may not accept  req once he accept trade req there will be our are classic trade pop up in which both user can enter POKEMONS ID and cash and Some particular items like [Rr and CC] and then user can accept from his side once both user accept the trade there will be final confirmation after which the req will send to the t-mod who will further proceed it [◇Users can cancel it before the tmod proceeds it further◇]

 

U may drop ur ideas too