The huge star is Goldberg and the answer to that question is... Maybe! I know. I'm sorry I can't give you more than that at this point but that's because nothing is official yet.
We do know that TNA offered Goldberg a deal a couple months ago, but several sources are reporting that the WWE is also interested in signing Goldberg before WM32. They are saying that the WWE doesn't want him signing with TNA and are likely going to offer him a better deal: more money for fewer dates and a WrestleMania match.
According to Daily Wrestling News, the WWE wants a 1-year deal, but they have also talked about just a 6 month contract. From Goldberg's side, he reportedly just wants one more match in WWE, that being one at WrestleMania.
I guess only time will tell. But not too much time, as WM32 is only nine weeks away!