Complex sentence: Therefore, another rule was introduced at the same time as the back-pass rule, this rule prohibits the goalkeeper from handling the ball again once he has released it for play; an offence would result in an indirect free kick to the opposition.
Split into simpler sentences: Therefore, another rule was introduced at the same time as the back-pass rule. This rule prohibits the goalkeeper from handling the ball again once he has released it for play; an offence would result in an indirect free kick to the opposition.