Senior editorial figures at The Sun are being consulted about redundancy amid widespread cost-cutting at News UK.
Press Gazette understands that Saturday editor Lisa Collins, head of editorial projects Jon Moorhead and head of sport production Paul Hudson are among those expected to leave.
Costs are being cut across News UK as the publisher deals with falling print circulation at The Sun, pressure on print advertising and the ongoing cost of the News of the World hacking scandal.
According to parent company News Corp, the hacking scandal fallout costs totalled £321m to the end of March 2015.
Print sales of The Sun fell more than 13 per cent year on year in May to an average of 1.8m per day.
The Sun has backtracked on its paid-for strategy for online announcing earlier this month that more content would be made available for free in order to boost advertising income.
In 2013 News UK paid £20m for the rights to show near-live Premier League football clips on its website. But the move does not appear to have had a huge impact in terms of driving online subscriptions for The Sun. The last official figures put Sun paywall subscribers at 220,000.