Audibles will allow you to execute running plays with slight changes. You have a limited amount of them.
Franchise players
Franchise players have very high stats and are acquired with franchise coins. You must spend gold, the game's premium currency to purchase franchise coins. Franchise players will eventually expire, but can be kept longer with more franchise coins.
Gold
Complete the achievements to earn cash, and sometimes even gold.
Passing
When your quarterback is waiting for your receiver, consider using an alternate path. If your receiver getting blocked by too many defenders, try the outlet pass The "Outlet Pass" button allows your quarterback to perform a different action, depending on his stats and the current situation. Use proper timing when controlling your quarterback. Do not wait too long to use an outlet pass.