Valencia defender, Christian Mosquera, has agreed on personal terms with Arsenal, ahead of a possible move this summer.
The Gunners have already seen an opening offer of around 14m for Mosquera rejected.
However, it is understood that Valencia is willing to do a deal for a fee in the excess of 20m.
This was revealed by football transfer expert, Fabrizio Romano, on X on Sunday.
Romano wrote: Arsenal have reached full agreement on personal terms with Christian Mosquera.