Complex sentence: On 24 April 2009, After 38 caps for New Zealand Cayless announced he would retire from representative rugby league immediately as he has achieved everything he wanted and to focus the rest of his football career on the Eels.
Split into simpler sentences: On 24 April 2009, after 38 caps for New Zealand, Cayless announced he would retire from representative rugby league effective immediately. His decision was based on the fact that he wanted to focus the rest of his football career on the Eels.