The coronavirus threat has forced the SFA and SPFL to draw up contingency plans.
The Celtic boss felt his side should have scored more against Copenhagen.
Celtic edged a 2-1 win against Aberdeen in blustery conditions after a late Kristoffer Ajer strike.
Neil Lennon says offers will come in for the award-winning striker.
The Celtic boss is delighted to have brought in two players already this month.
Celtic have complained to Sky Sports over pundit Kris Boyd's criticism of the striker.
The Celtic boss insists his side are in a good place going into the second half of the season.
Leigh Griffiths has told Celtic manager Neil Lennon that he is ready for action.
The midfielder is close to being Celtic's second signing of the January window.
The Aberdeen chairman claimed Kristoffer Ajer feigned injury after Sam Cosgrove was sent off in the Dons' 2-1 defeat at Parkhead.
The Celtic boss is happy to have avoided some of the bigger names in the Europa League.
The goalkeeper, who is out of contract next summer, wants more playing time.
Celtic face CFR Cluj with their Europa League group already wrapped up.
Celtic's first choice striker has been back in training ahead of the clash with Rangers.