Arsenal have given Napoli until the end of the week to sign David Ospina.
The Serie A club have the option to sign Ospina for £3.1m after his successful loan spell in Naples.
However, that agreement is due to expire on Saturday and Arsenal believe Napoli want to pay less than that price, according to The Sun.
Carlo Ancelotti dropped Ospina one game shy of the 25 games it would have taken to compel Napoli to complete a permanent deal.
The report claims Napoli want to pay only £2m for the Colombian international, a total Arsenal will refuse to accept.