Kairi (formerly Kairi Sane in WWE) did an interview with Steve Fall for WrestlingNews.co and here are a few highlights via a translator…

Becoming a free agent:
>"She’s a free agent. She would like to go anywhere possible. She would like to go to the US if there’s a chance to go back again. She’s a free agent.”

Potential WWE return:
>“Vince [McMahon] said ‘the door is always open, you’re always welcome to come back.’ If she comes back one day, she will team up with Asuka again, team up with IYO SKY or maybe against IYO SKY, who knows?”

Potential Royal Rumble appearance
>“It’s her favorite PPV of the whole year so she definitely wants to wrestle one day in the Royal Rumble.”

On a side note its kinda funny Vince ended up being a JoshiCHAD in the end.