The 29 year-old's representatives and Valencia are believed to be in talks over a move to the club according to RMC as the 32 time international would like to try an experience abroad.
Valbuena has left it up to his representatives to negotiate while he prepares for the World Cup in which he should play a fairly important role in Brazil.
Valencia have not made an official offer to Marseille as of yet but if a decent offer were to come in for the attacking midfielder who is also adept to both wings, the French club would not block a move who has served them extremely well over the past years.
The former Libourne player made 34 appearances in Ligue One last season with a return of 3 goals and 8 assists.