Complex sentence: He later made his debut for Samoa the same year his contract with Waikato finished in 2006, during the inaugural IRB Pacific 5 Nations tournament and was later named in the Pacific Islanders touring squad for 2006.
Split into simpler sentences: He later made his debut for Samoa in 2006, during the inaugural IRB Pacific 5 Nations tournament, the same year his contract with Waikato had finished. That same year he was named in the Pacific Islanders touring squad for 2006.