The Japan international was substituted after a collision with Pittodrie defender Slobodan Rubezic just after half time.
He received treatment on the pitch after the foul by the Montengran who was shown a yellow card for his challenge.
And Rodgers revealed that the 28-year-old will not be travelling with his country on international duty.
Speaking to Sky Sports, he said: “It was not great for him. Obviously it was a nasty blow for him so he will not travel to Japan as he will need to recover.
“The medical team will make sure he is okay. I have not seen it back but it looked a real sore one.”
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Rodgers also praised both Yang Hyun-jun and Luis Palma for their contributions, after both men scored against Barry Robson’s men.
“It is our idea to start fast in every game and the players scored a couple of really good goals,” he continued.
“Luis Palma played very, very good and he is showing variety as he is developing as did Yang when he got his old hanging around the second post.
“Normally you see wingers looking in but both those guys contributed very well. Luis is a very talented player and can create and score goals.”
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