The Brazilian international has long been linked with a move to Arsenal.
The Brazilian international was quoted by Goal.com as saying this late last month:
"When I came here, I was told to try and help build a great team.
“If we really want to be a top team, then those responsible must also play their part. Previously they have always invested in the squad and if it stays that way then will remain here.”
So with Gustavo apparently on his way out of the club surely this is music to the ears of Arsene Wenger – a long-time admirer of the Brazilian.