Would you believe me if I said this has been on the todo list for about 5 years! :-)
In the meantime, best bet is to create another game and make it “Occasional”. When you invite your players to the game you’ll be able to invite everyone from your current squad (see “Squad Picker” button on the right hand side).
Then you can create a match as and when you want to have your award ceremony :-)
Oh, and please tell me you have a cheap plastic trophy you present – tweet us a photo if you do :-)