Complex sentence: In 1984, he also took Saudi Arabia to the Olympic Games finals in Los Angeles, which was considered a significant achievement at the time, but his sights were firmly fixed on the AFC Asian Cup scheduled for December that year.
Split into simpler sentences: In 1984, he also took Saudi to the Olympic Games finals in Los Angeles, considered a marvellous achievement at the time. But his sights were firmly fixed on the AFC Asian Cup scheduled for December that year.