Complex sentence: On 18 January 2010, Garðar officially terminated his contract with CSKA Sofia before signing for Austrian side LASK Linz in February 2010, making his debut for LASK in April due to groin injuries.
Split into simpler sentences: On 18 January 2010, he officially terminated his contract with CSKA Sofia. Gunnlaugsson signed for LASK Linz in February 2010 but only made his debut for LASK in April due to groin injuries.