Lightning Returns: Final Fantasy XIII producer has shown interest in remaking Final Fantasy VII but say that a few obstacles are in the way, such as "staff availability and budget".

Here's the quote from his interview with Eurogamer:

"I can honestly tell you I would love to do that. If you simply ask me if I personally would like to do that, yes I would. Definitely. There’s no lie about it. But you must believe me when I say it would take a lot to happen.”

"Even if I casually say I would like to do that, because it would be a huge project I would have to motivate myself to the level that I really am prepared to take on this huge responsibility. I don’t know if those three things will happen simultaneously. It has to tick lots of very big boxes. I won’t rule out the possibility, but it would take a lot to make it happen.

"But should I ever take it on, it would have to be the biggest project I’ve done. My life work. So I would have to be as highly motivated as that to end up with something I’m very happy with. It’s a huge thing for me."