The 21-year old Australian midfielder joined the Scottish giants from Central Coast Mariners in January 2013 but made just 15 first team appearances before he was loaned to Melbourne Victory this past January.
Rogic, who has appeared 10 times for the A-League club since returning to his homeland, will be back in Glasgow for the beginning of the 2014/15 Scottish Premiership season and is hoping he can step up and stake a claim for a spot in Neil Lennon's title-winning squad.
"Celtic has been a good experience but I won't lie, it has been tough," Rogic, who is striving to make the Socceroos' World Cup squad, told the Daily Record.
"I don't think I realised what a big club they are. The expectation on the players is just enormous.
"Kris (Commons) plays in my position and he's the top scorer. He scores almost every week.
"It's difficult for anybody to come in and take his place.
"Some of these guys at Celtic have skill that would blow your mind. It was after two or three weeks that it dawned on me and I thought, 'This is hard. This is much tougher and sharper than back home'."
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