The Frenchman has enjoyed an excellent season on personal level and while he is reportedly a target for Barcelona, the 30-year-old is not looking to move clubs.
After enduring a summer of uncertainty a year ago, Mathieu has informed his agent not to negotiate with interested sides as he is perfectly happy at Valencia.
The highly rated defender has established himself as a key player for los Che and he is finally playing in his new favourite role of centre-back.
Mathieu has been almost ever present for Valencia this term, starting a total of 45 competitive fixtures and scoring 4 goals in the process.
Following the 2-2 draw at Santiago Bernabeu, los Che face local rivals Levante on the road and they are 23/20 favourites to claim maximum points at Estadio Ciudad de Valencia.