Couple rule changes for next season:
The ball can be passed backwards when kicking off.
Players may only receive a yellow card if they concede a penalty. Previously it was an automatic red card if someone denies a goals scoring opportunity, even if it's accidental. That was deemed too harsh, so they made a slight tweak.
Players will be able to receive treatment quickly on the pitch if they are injured in a challenge that results in a yellow or red card, no longer have to leave the field.
Penalty change - Feinting once the run-up is complete will result in a yellow card for the taker.
If play is stopped due to interference from a team official or substitute (Diego Simeone's backroom staff throwing a ball onto the pitch) Instead of an indirect free-kick or drop ball, the referee will now award a penalty kick to the opposition.