Jenson Button has said he misses racing on a full-time basis and discussions are already underway about a return next year, possibly in Super GT.
The Brit stepped in for Fernando Alonso at the Monaco Grand Prix this year is due to take part in the Suzuka 1000 this weekend.
Button will review how his weekend goes and, if he enjoys it, then a full season in Super GT could well be on the cards.
"I will be definitely doing something next year for a full season," Button said.
"Whether it's here or in America or somewhere else, I don't know yet. But the discussions are underway. We'll see how this weekend goes. If it goes well and if I enjoy the weekend, which I think I will, then maybe I could be racing here next year."
Button feels the Super GT cars are similar to Formula 1 cars, especially through the corners, and is having a blast driving them.
He added: "The cars are great to drive. They are fast, here's a lot of downforce and you can carry a lot of speed through the corners.
"Through the corners, it feels like a Formula 1 car, which is pretty spectacular. And also you have the GT300 cars to overtake. It's another added challenge for me, something that's new to me.
"So lots of new things this weekend. Lots to learn. But I've always looked forward to a new challenge."