Magnus, Desmond Wolfe, and Kurt Angle are all still signed with TNA.
Kevin Nash, Bobby Lashly, Sabu, Sting, and Booker T are no longer in TNA. It is unknown if they will return to the company.
Scott Steiner made a return to TNA on January 12, 2011 (the taping of the Jan. 27 show).
Kevin Nash, and Booker T recently appeared at the 2011 Royal Rumble pay-pew-view. Booker T is currently signed with WWE as a color commentator, and occasional wrestler. Wrong. Neither Kevin Nash nor Booker T Aaron signed to a contract as of February 2, 2011 It was a one night deal
no
Unlikely
Lashley will go to Tna, why because he is good friends with Booker T and Booker has been trying his best to convince Bobby to go to Tna, and I guess both sides have reached an agreement. They said their pushing him to debut in June.
He has went to tna impact
he went to tna impact in 2007
At the 2011 Royal Rumble
Booker t
Booker t and kevain Nash and i am not kidding this is going to be awosome. unlike the miz
Christian Triple H Evan Bourne Y2J and i think Booker T
I Don't' Know In TNA But I Know In WWE He Returned At The Royal Rumble Suddenly in 2011
As of now, there is no news about when or if Bobby Lashley will return to the WWE. After his release from the WWE, Lashley tried out a stint at TNA which wasn't too successful. He even tried out mixed martial arts fighting (like UFC but not UFC) which wasn't too successful either. When Brock Lesnar returned to WWE in April 2012, there was a lot of speculation about Lashley returning as well. Though Lashley was said to have been interested in returning to the WWE, it is rumored that WWE wasn't too keen in signing up Lashley to a part-time deal like what they did with Lesnar. Hey may return but as of now there is no concrete news on if or when he is going to return.
There is no garuntee but the following superstars are the most predicted: Triple H, Stone Cold Steve Austin, Booker T, HBK [Shawn Michaels], Dwayne 'The Rock' Johnson, and last but certaintly not least, Diesel.