I'll leave the last word to Celtic manager Brendan Rodgers.
"It certainly wasn't perfect by any means. I thought the first half was excellent. We had good intensity, pressure and shape. We scored three and we could have had a few more.
"Once tiredness set in after the break, the tempo slowed down."
Asked if he will be adding to his squad, he replied: "Hopefully that is the case. We would certainly like to."