Trinity Mirror PLC (LON:TNI) said it expects fourth quarter like-for-like revenue to fall 9% on the back of declines in print advertising and circulation.
Like many other newspaper publishers, the owner of the Daily Mirror has struggled to adapt to the shift towards online news.
READ: Trinity Mirror confident of in-line full-year outcome despite another revenue slide
Print advertising and circulation revenues are forecast to fall 21% and 7% respectively in the final quarter, Trinity Mirror said in a trading update on Friday.
In contrast, publishing digital revenue is estimated to grow 10%.
The company, which is in talks to buy the publishing assets of Daily Express owner Northern & Shell, said publishing digital display and transactional revenues are expected to rise 20% in the quarter.
The full year performance is expected to be in line with expectations.
The group said its proposed acquisition of Northern & Shell, which also houses the Daily Star, was making progress. Such a deal could generate cost savings as the print media industry tackles sluggish print advertising revenues.
READ: Trinity Mirror in talks to buy all of Richard Desmond's publishing assets, which includes Daily Express and Star
Northern & Shell is owned by Richard Desmond, who bought the Express titles for £125mln in 2000.
Meanwhile, Trinity Mirror announced that it expects to complete its triennial pension funding valuations ahead of the deadline of 31 March 2018.
It has agreed with trustees that annual contributions to its three pension schemes will increase by £8mln to £44mln per year for 10 years from 2018.
"The increase in annual contributions reflects the increase in deficits since the last valuation which has been largely driven by the fall in long term interest rates," it explained.