St Mirren have completed the signing of former Derby County striker Callum Ball on a one-year deal.
Marco Reus' agent has admitted that most of Europe's top clubs are looking at the Borussia Dortmund star.
The 29-year-old France international, signed from Toulouse in 2009, played 25 games for Los Che last season, scoring twice.
Mathieu, while participating in the new season's kit launch, told valenciacf.com: "I am delighted to renew with Valencia, in this great club.
"I feel great and very happy to stay several more years in Valencia."