Complex sentence: He made his debut in October 1991 in the League Cup (then known as the Rumbelows Cup) against Cambridge United and later played against Atletico Madrid in the European Cup Winners' Cup, which was to be his last appearance for the first team.
Split into simpler sentences: He made his debut in October 1991 in the League Cup (then known as the Rumbelows Cup) against Cambridge United. However, this was to be his last appearance for the first team.