Christian Horner has dropped the biggest hint yet that Red Bull could yet end up staying with Renault power in 2016.
The team had a contract that run into next season, but has been trying to negotiate its way out of the deal in recent weeks after being unhappy with the engine performance all season long.
However, Renault now seems to be the only realistic option for Red Bull, and Bernie Ecclestone has been trying to smooth the waters.
"At the end of the day nothing as we stand here is fixed," Horner told Sky. "We're working on lots of different scenarios.
"Obviously Bernie is actively involved as well, he's keen to find a solution, and we need to.
"This team is too good not to be involved in F1, and there's an awful lot of staff members whose futures depend on this decision, and therefore it's important that we make the right one.
"I believe we will find a solution, and hopefully one that's right for the team for the future."
Pressed on what the realistic options were, he said: "There's lot of rumours at the moment, everybody's got an opinion on what we should or shouldn't do, and so on.
"In many respects we are a victim of our own success, and you can understand the trepidation that other manufacturers who have their own teams have in terms of supplying us.
"But we'll find a solution, we'll work our way through it, and hopefully we'll find something that gives us the opportunity to fight for race wins and victories in the future. Everything's open. Well, pretty much everything.
"Nothing is officially finished with Renault yet. Again there's lot of speculation. It's difficult to envisage how we go forward.
"But this is F1, and nothing is impossible. We are still waiting to hear what are Renault's plans for the future. Are they going to buy Lotus, are they going to stop themselves?"
Support for Renault
In stark contrast to the criticism he's heaped on Renault recently Horner indicated some support for the French manufacturer.
"What you don't see is what happens behind the scenes, and the commitment that's gone in to trying to make this power unit work, the investment that's been made, and the solutions that have been provided.
"My priority is seeing Red Bull in F1 next year, I want to see our cars with our drivers on the grid, That means taking to all parties that have a potential interest in us being here next year."
He confirmed that in the end, it will be Dietrich Mateschitz's call.
"That ultimately will be his choice. All I can do is present some good options in front of him for him to make that final call.
"He's passionate about this team, Red Bull have probably invested more in F1 than any company over the last 10 years. He cares about the employees, he cares about what the future of the company is.
"He's been around F1 for 20 years now, firstly as a sponsor, then as a team owner. He just wants to see us in a position where we can compete. Hopefully we can come to some conclusions which will enable us to do that."