Complex sentence: He was heavily criticised to be inept and too inexperienced on international stage to manage the Malaysian national team which was slaughtered 5-1 to China and 5-0 to Uzbekistan in the 2007 Asian Cup.
Split into simpler sentences: He was heavily criticized to be inept and too inexperienced on international stage to manage the Malaysian national team. The Malaysian team was defeated 5-1 against China and 5-0 against Uzbekistan in the 2007 Asian Cup.