Complex sentence: He transferred very briefly to Olympiakos Nicosia in 2008 in a dual role of player and coach at the Olympiakos academy, however subsequently announced his retirement for family reasons.
Split into simpler sentences: He transferred very briefly to Olympiakos Nicosia in 2008 in a dual role of player and coach at the Olympiakos academy. However subsequently announced his retirement for family reasons.