Charlie Sheen on “Two and a Half Men.” (GREG GAYNE/AP)

Sheen, who does all his negotiating on the air, told Boston sports radio station 98.5 WBZ-FM late Tuesday night that “there’ve been discussions” and that it’s “85 percent” likely he’ll be back on the show this fall.

Now, “there’ve been discussions” can cover a multitude of sins.

Is a return to work something Sheen’s camp has tossed out as a condition of dropping his $100 million lawsuit against Warner Bros and show exec producer Chuck Lorre? Or is it an idea launched from the studio side in that arbitration?

Sheen told WBZ-FM he’s not at liberty to discuss.

But one thing he wants to make as clear as possible: Warner Bros and Lorre are at fault for his behavior leading up to his firing -- behavior that included not showing up for rehearsals after a night of hard partying, showing up on shooting days in a condition that required special help, publicly spewing insults against Lorre and demanding Lorre be sacked, etc.

“Had they told me at the end of Season 8 that that behavior wasn’t going to be cool, I would have adjusted it,” Sheen whined to WBZ-FM, which had noticed in recent appearances on his Violent Torpedo of Truth Tour, Sheen had been mentioning that he wanted his job back.

No word yet from Warner Bros or Lorre.

So why is Sheen suddenly so anxious to go back to “Two and a Half Men” after all that blather about how happy he was to be free from the show when Warner Bros announced they’d sacked him?

We’re guessing he’s getting very mixed reviews as a live comic — his most recent performance, in Boston, was a “dreary debacle,” wrote The Boston Globe.

And, prospective employers learned Tuesday night he has no talent for improv. You can see here for yourself via his appearance on GSN network’s new Drew Carey-hosted show, “"Improv-a-Ganza”:

[Warning: this video contains adult language.]