Harvard Law School professor emeritus Alan Dershowitz predicted on Sunday that special counsel Robert Mueller's final report for the federal Russia investigation will be calamitous for President Trump.

"I think the report is going to be devastating to the president. I know the president's team is already working on a response to the report," Dershowitz said on ABC News' "This Week." "At some point when the report's made public, and that's a very hard question considering the new attorney general who has the authority to decide when and under what circumstance to make it public, it will be made public probably with a response alongside."

But Dershowitz, who has been critical of Mueller's probe, clarified that he did not think the special counsel's conclusions after the more than yearlong Russia inquiry would lead to criminal repercussions for Trump.

"When I say 'devastating,' I mean it's going to paint a picture that's going to be politically very devastating. I still don't think it's going to make a criminal case because collusion is not criminal," he said. "What I think Mueller is going to do if he's smart is he's not going to take the chance on being rebutted. He's just going to lay out just the facts."

[Opinion: I don't support Trump, but don't rely on sketchy Robert Mueller to boot him from office]



What's next in the Mueller investigation?



"I think the report is going to be devastating to the president," Harvard Law Professor Emeritus @AlanDersh says. "And I know that the president's team is already working on a response to the report" https://t.co/GlcWTIu29g #ThisWeek pic.twitter.com/LtogMZA5rP — ABC News Politics (@ABCPolitics) November 25, 2018



Acting Attorney General Matthew Whitaker has come under fire for comments he made in the past undermining the Mueller investigation, sparking concerns regarding how he will handle the special counsel and his eventual report.

Trump last week submitted written responses to questions posed to him by Mueller's office, indicating the special counsel's probe may be in its final stages.