A threat by junior doctors to go on strike unless the health secretary makes further concessions on changes to their contracts leads the Guardian. It says more than 2,000 medics have written to Jeremy Hunt about plans to impose the new deal on 53,000 NHS staff in England.
Monday's Telegraph leads on a reported row between a senior Conservative back-bencher and the health secretary. Dr Sarah Wollaston, of the Commons health committee, has accused Jeremy Hunt of suppressing a report on the case for a sugar tax, the paper says.
Staying with health issues, and the Daily Mirror reports that the NHS is treating people who are addicted to the internet, shopping, or computer games. The paper says critics will see this as a waste of money, but quotes an expert saying "gaming can damage lives".
The Times leads on fears party leader Jeremy Corbyn may be planning a "purge" of "moderate" Labour MPs. It says ex-Home Secretary Lord Blunkett and MP Mary Creagh have concerns about a "hard left" group called Momentum, set up after Mr Corbyn's leadership election victory.
The Daily Mail says Facebook "paid less tax than the the average British worker" last year, despite making £105m. The US firm paid "just £4,327", it adds. Pictured is the BBC's Victoria Derbyshire, who has made a video diary of her mastectomy after being diagnosed with cancer.
The Independent returns to Saturday's double bombing in the Turkish capital, Ankara, which killed at least 95 people. The paper says there are fears the war against the self-styled Islamic State in Syria and Iraq has spread to Turkey, as investigations focus on an IS faction in the country.
An Iraqi air force attack on a convoy thought to be carrying the leader of the Islamic State (IS) group leads Monday's Metro. At least eight senior IS figures are thought to have been killed, but the fate of the group's head, Abu Bakr al-Baghdadi, is not known.
Former Conservative Chancellor Kenneth Clarke has written for the i, which says he has "come out fighting for Europe". The paper adds Mr Clarke believes Euro-sceptic Tories "fear the modern world". The campaign to persuade voters to stay in the EU launches on Monday.
The Financial Times leads with calls from a senior banker for European investment banks to merge, so they can better compete with rivals in the US. Barclays chairman John McFarlane tells the paper the move would need political support.
