Complex sentence: The new wording seeks to define the three cases more precisely, but controversy regarding offside decisions often arises from assessment of what movements a player in an offside position can make without being judged to be interfering with an opponent.
Split into simpler sentences: The new wording seeks to define the three cases more precisely. Controversy regarding offside decisions often arises from assessment of what movements a player in an offside position can make without being judged to be interfering with an opponent.