Complex sentence: The ill feeling was originally sparked by an incident between Van Nistelrooy and Patrick Vieira; having been fouled by Van Nistelrooy, Vieira aimed a kick in retaliation, although did not make contact, he was still sent off for a second bookable offence.
Split into simpler sentences: The ill feeling was originally sparked by an incident between Van Nistelrooy and Patrick Vieira. Having been fouled by Van Nistelrooy, Vieira aimed a kick in retaliation; although the kick did not make contact, he was still sent off for a second bookable offence.