Ange Postecoglou expressed his support for a potential tour of Japan for Celtic but noted that he is not in the know about the proposed idea.

Last July, reports first emerged that Celtic had begun talks about a special tour of Japan, and those rumours resurfaced this week when a report from the country suggested that Celtic, Manchester City, Bayern Munich and Paris Saint–Germain could all be included in the plans.
It’s an idea that Postecoglou is open to, but he does admit there are a few options on the table. During Friday’s Press Conference, the boss said: [Celtic TV]
“I am sort of out of those discussions. I come into it when there is actually something to talk about. Obviously, we had a great tour of Australia. We are now looking at the planning for the summer break and there are a couple of things in play.
“Is it a part of the world I would love us to go to? Absolutely because I have spent time there, I have brought quite a few players from that side of the world.
“In terms of where the club is at, other people are in charge of those discussions and I only get involved if we get to the stage where we have got to plan things.”
It is unclear whether or not this tour will come to fruition, but it does seem that it may.
If Celtic wins the league this year they’ll qualify for the Champions League, giving them some extra time in the summer to participate in such tour, with no qualifiers to play.