Mata has just helped Spain lift the European Under-21 championship, and he is being strongly linked with a big-money move away from La Mestalla.
Both Liverpool and Arsenal are both understood to be keen, whilst Real Madrid and Barcelona are also thought to be monitoring the situation.
But Mata says he could easily remain with Valencia - who are back in the Champions League next term.
"I want to win a trophy with Valencia next season. I've not planned anything different as I've a contract until 2015," Mata told SuperDeporte.
Reports suggest that although Valencia want to keep Mata, they are still financially strapped and a bid in excess of £23million could be enough to land him.
Spanish sources claim Real could be ready to offer Pedro Leon in exchange, which again could tempt Valencia.