If that proves to be accurate the striker could play away to Aberdeen on October 3, three days after the home Europa League tie against Bayer Leverkusen.
That instantly kicked off a frenzy of speculation, not all of it involving Celtic fans over how long the striker would be missing.
Those with a glass half full saw the substitution as a precaution, half empty fans were concerned about an injury with no obvious contact. At today’s media conference Postecoglou was able to deliver some reality.
Ange Postecoglou says Kyogo will be out for around 3-4 weeks after picking up an injury on international duty
— Ronnie Charters (@STVRonnie) September 10, 2021
Albian Ajeti looks like coming in from the cold tomorrow with recent signing Georgios Giakoumakis still to play any competitive minutes as his future was being resolved by VVV Venlo.
— STV Sport (@STVSport) September 10, 2021