Newcastle United have upped their offer for Sevilla defender Diego Carlos but are yet to convince the Spanish side into a sale.

That’s according to Goal Spain, who say the Magpies ‘insist on’ the signing of the Brazilian but Sevilla are ‘clear’ they will only sell if they receive a ‘big offer’ and if the replacement they can get for him offers ‘guarantees’.

They explain that the La Liga side have made it clear that Carlos will leave on their terms and that will not change, regardless of the ‘onslaught’ from Newcastle to sign him.

According to Goal’s information, Eddie Howe and co have ‘made a new bid’ in ‘recent hours’ for the Brazilian but it has ‘again been rejected’. They don’t share the nature, or value, of the latest bid.

What they do say is that Sevilla are convinced Newcastle will ‘continue to insist’ on trying to sign the defender throughout this month.

Sevilla are not phased, though, and have made it clear that only an ‘off-market offer’ would convince them to let go of one of their key players.

They also want to have a replacement signed before they do so and they’re not convinced finding a suitable candidate will be possible in the January transfer window.

The Spanish club need to make a big sale before June 30th thanks to their early exit from the Champions League as they had budgeted for revenue from reaching the quarter-finals.

That does not mean they are desperate to sell this month, though, and instead feel this month’s window is one in which they should be strengthening not weakening themselves.

Carlos has a ‘juicy financial offer’ from Newcastle that would ‘greatly improve his salary’ but it would mean swapping a fight at the top of the table for a relegation battle.

That’s a consideration for him to make but he won’t have to unless Newcastle offer a ridiculous price and convince Sevilla into a sale they really don’t want to sanction.