Plain and simple, you get the Lombardi Trophy from the "Welcome Pack" you are asked to buy with the free 50 coins you get....(1st requirement in the "Getting Started" challenge)..you select the Lombardi Trophy, then select "add to set" (its on the right of the card), the MVP Trophy is actually acquired when you finish a solo challenge, which is the 4th requirement in the "Getting Started" challenge.......
In case you are wondering or new to the game......select the "HOME" tab at the main menu........select "M15 Ultimate Team".......you should be already on the "LIVE" tab, bottom right hand corner is "OBJECTIVES", the first task should be "Getting Started", finish all 4 easy tasks and you will have both trophys.....all you have to do is make sure you add BOTH to the set.....cheevo popped.......hope this clears things up because the other solution wasn't exactly accurate....you do NOT need to do any preseason game for a team or add some bronze (whatever he was talking about)