Kapo joined Celtic on a free transfer earlier this month after leaving Wigan at the end of last season.
"It is possible I will play against United," said the 30 year old. "I feel ready and I am looking forward to my first game at Celtic Park. The first two games I have seen have been away.
"I was in the stands for both and was impressed by the enthusiasm of the Celtic fans who sang throughout the match. It really makes you want to play and win for this club.
"My adjustment is going well. The Scots are very friendly people. I feel fine except for the fact that my kids are starting to miss me. I'm in a hotel so they will have to wait a while before they join me."