Aaron Mooy opened the scoring after a matter of seconds.

Source: https://www.thescottishsun.co.uk/sport/football/10349475/celtic-fans-banner-pyro-hearts-cup-clash/

But, while the manager has got his hands on one incoming Aussie international star, his squad has also lost an influence in Aaron Mooy.

Source: https://www.dailyrecord.co.uk/sport/football/football-news/marco-tilio-been-building-celtic-30372829

However, he is set to welcome Mooy back into the Celtic squad as he returned to fitness in time for the derby encounter.

Source: https://www.heraldscotland.com/sport/23442516.celtic-suffer-injury-blow-rangers-clash-reo-hatate-ruled/?ref=rss

I know Mooy hadn't played for several months before he pitched up at Parkhead, but in a lot of his early games I just couldn't see what he was going to bring.

Source: https://www.glasgowtimes.co.uk/sport/23287548.charlie-nicholas-issues-aaron-mooy-celtic-apology/?ref=rss

Mooy decided against joining up with the Socceroos national team for their 2-0 friendly defeat to Argentina last week and “refused to comment” on whether he would see out the second and final year of his Celtic contract.

Source: https://www.glasgowworld.com/sport/football/key-celtic-midfielder-considering-retirement-as-rangers-boss-keen-on-ps4m-bk-hacken-striker-4192877

Mooy has been a virtual ever-present since joining Celtic during the summer.

Source: https://www.glasgowtimes.co.uk/sport/23331086.reason-aaron-mooys-celtic-v-aberdeen-absence-revealed/?ref=rss

Mooy was then asked about commiting his future to Celtic, with Ange Postecoglou previously stating that he was looking to tie him down on a longer term contract.

Source: https://www.heraldscotland.com/sport/23300576.aaron-mooy-celtic-future-greg-taylor-makes-quip-form/?ref=rss

Mooy, who's been thriving ever since returning from his impressive World Cup campaign, was involved in the first three Celtic goals at Perth's McDiarmid Park.

Source: https://www.perthnow.com.au/sport/soccer/socceroo-mooy-keeps-scoring-run-going-for-anges-celtic-c-9661899

There is no doubt the captain will get the nod to start against Rangers but it's between Mooy, and Hatate for the two remaining spots.

Source: https://www.thescottishsun.co.uk/sport/football/9986919/five-burning-questions-celtic-ange-postecoglou-rangers-mooy/

Tilio is relishing his big chance to follow in the footsteps of some of Celtic’s famous Aussies such as Mark Viduka, Tom Rogic and Aaron Mooy.

Source: https://www.dailyrecord.co.uk/sport/football/football-transfer-news/marco-tilio-swerves-ange-celtic-30421322