Joe Hart has reacted to Aaron Mooy's decision to call time on his career with two words.
The midfielder has decided to retire from professional football with both Celtic and Australia with immediate effect. The Aussie played a key role for Ange Postecoglou last season in the domestic Treble triumph making 42 appearances in all competitions and contributing with seven goals and 11 assists across the campaign.
The 32-year-old also featured in the Champions League group stage last term including appearances against European heavyweight Real Madrid. Across his 15 year career he turned out for the likes of Brighton, Huddersfield Town, Melbourne City and St Mirren while he also won 57 caps for his country and played in a World Cup finals.