GM set to announce Opel and Vauxhall sale on Monday

General Motors is set to announce a deal to sell its Vauxhall and Opel operations to the French company that owns Peugeot and Citroen.

PSA Group has scheduled a press conference with GM for Monday morning in Paris, BBC News reports.

The two companies had wanted to announce a deal before the start of the Geneva motor show on Tuesday.

The sale could threaten the jobs of 4,500 workers at Vauxhall's plants at Ellesmere Port and Luton.

Union officials said on Sunday that Vauxhall staff had endured a "nerve-wracking" few weeks.

Buying GM's loss-making European operations will make PSA the continent's second-biggest car maker after Volkswagen and ahead of French rival Renault.

PSA and GM Europe sold a combined 4.3 million vehicles last year and posted revenues of 71.6bn euros (£61.9bn).

The two companies already share some production and confirmed last month they were in talks.

Opel had hoped to return to profitability by 2016, but the slide in sterling following the EU referendum last June contributed to its 257m euros annual loss.

In contrast, Ford Europe managed to make a pre-tax profit last year despite the pound's collapse.