It seems that the keeper never gets a yellow or red card during a match. It often happens that a striker is through on goal with only the keeper to beat.
The keeper can happily foul the striker. The striker goes down in the penalty area, and instead of giving the keeper a red or yellow card and assigning a penalty, the keeper simply picks up the ball as if nothing happened.
I've seen this several times, also when my striker is already past the keeper he gets fouled and nothing happens.
It would also make the game more interesting, as most teams only bother to have one good keeper and sell upcoming keepers for money. With a red carded keeper, next match even a very good team will be vulnerable if they have to put a "reserve" keeper in the goal.