The striker has had a new lease of life in Ligue 1 featuring 22 times so far this season and is desperate to stay on.
Sebo's agent Karl Csonto said: "Filip is really happy in France and of course he would now like to stay at the club permanently.
"But I can't tell you now what Valenciennes want to do in the summer because they have until April to make a decision.
"Coach Toni Kombouare is satisfied with Sebo and they are proud to have a striker of his level.
"He is getting games, it's a new environment and the system of play suits him so we will see what happens."