Alongside much-coveted defender Jarrad Branthwaite, Onana is seen as another Toffees man who could leave for big money this summer in order to alleviate Everton's financial crisis.
Sean Dyche's men were previously docked an unprecedented 10 points for breaching Profit and Sustainability Rules, although their penalty was reduced to a six-point deduction upon appeal.
Thanks to Nottingham Forest's own economic indiscretions and subsequent four-point deduction, Everton are safe in 16th place for the time being, albeit with just a four-point lead over the Tricky Trees with a game in hand.
The Toffees therefore remain at serious risk of a first-ever relegation from the Premier League, and such a disastrous scenario would likely force the Merseyside club to entertain lowball offers for their in-demand stars.
Twenty-two-year-old midfielder Onana would be expected to bid farewell should Everton suffer demotion to the Championship, but his contract is not due to expire until 2027, and the Toffees are reportedly holding out for a fee of around £80m in spite of their predicament.
That eight-figure price tag would prove too steep for Barcelona to cough up amid their volatile financial situation, but according to Sport — via TEAMtalk — the Blaugrana could try to sweeten the deal by including some out-of-favour troops.
Sergino Dest, Clement Lenglet, Ansu Fati — who are all on loan elsewhere — and Fermin Lopez could supposedly be offered to the Premier League strugglers, as none of them appears to have a future with Barcelona.
Once heralded as the heir to Lionel Messi, Fati's development has since been
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