Arsenal management are happy to be selling Gabriel to Valencia.
The Brazilian defender could sign for Los Che today.
The London Evening Standard says Arsenal will now turn their attentions to moving on other players including Kieran Gibbs, Lucas Perez, Mathieu Debuchy and Calum Chambers.
Gibbs has attracted interest from a host of clubs including Watford, Newcastle and Brighton but, as Standard Sport revealed on June 8, Arsenal may be required to lower their £15m asking price.
The left-back is in the final year of his contract at Emirates Stadium and is assessing his options after being told his opportunities would be limited.
Perez is in a similar situation with his agent repeatedly voicing his frustration at Arsenal's unwillingness to take a significant hit on the £17m they paid Deportivo La Coruna to sign him just over a year ago.
Deportivo are interested in re-signing the striker but the two clubs remain a long way apart in their valuations. Newcastle's attempt to take Perez on loan was rejected with the Gunners demanding a permanent transfer.