The CW’s Arrowverse is getting ready for its newest crossover event, set to start in December, and it’s making sure it’s the biggest one yet by recruiting some major fan-favorites in the DC world.

Not only will Tyler Hoechlin reprise his role as Superman, but “Legends of Tomorrow” star Brandon Routh will also once again play the Man of Steel, after having played him on the big screen in “Superman Returns.”

The real kicker? “Smallville” actor Tom Welling will be bringing back his version of Clark Kent for the big crossover event, and Erica Durance will be returning as Lois Lane right along with him.

This got a lot of fans wondering about who else might be recruited for the big 2019 crossover. Mainly, a lot of fans have been clamoring for The CW to get Michael Rosenbaum to reprise his “Smallville” role as Lex Luthor.

michael rosenbaum hospital
Michael Rosenbaum is pictured at the “Impastor” Season 2 New York Premiere on Sept. 27, 2016 in New York City. Nicholas Hunt/Getty Images

Unfortunately, it seems that won’t be happening. The “Inside of You” podcast host revealed on Twitter on Tuesday that he recently turned down the network’s offer to appear in the crossover, citing “no script…no idea when I’m shooting, [and] basically no money” as reasons why.

“Friends, many of you have tweeted and asked me about joining the Infinite Crossover. I can’t tell you how much this means to me. I’ll just be straight up about this. WB called my agents Friday afternoon when I was in Florida visiting my grandfather in a nursing home,” Rosenbaum wrote. “Their offer: No script. No idea what I’m doing. No idea when I’m shooting. Basically no money. And the real kick in the ass ‘We have to know now.’ My simple answer was ‘Pass.’ I think you can understand why. I hope this answers all of your questions. Lovingly, Rosenbaum.”

The “Crisis On Infinite Earths” Arrowverse crossover is set to kick off with part one on Dec. 8, with an episode of “Supergirl.”