Sanchez had appeared set to leave Arsenal for Manchester City despite seeing a move to the Etihad Stadium fall through over the summer.

But the Guardian say Manchester United have now attempted to steal a march on their fierce rivals by launching a spectacular £25million bid.

The Red Devils are desperate for more firepower with Romelu Lukaku misfiring in recent weeks and Marcus Rashford and Anthony Martial struggling for consistency.

And they have attempted to deal City a huge blow by landing Sanchez from under their noses.

It is said Pep Guardiola's men have already agreed personal terms with the Arsenal star worth around £250,000 a week, having submitted a £20m offer.