Maduro has struggled to find consistency since his arrival from Ajax.
But he says: "I have a lot of confidence because my last match me was very good [for Netherlands] even though it was not the first choice squad. I played in midfield and knew I had nothing to lose, I focused on having a good game, as the minutes passed , I was gaining confidence so I could show my real level.
"In the Netherlands I was more settled in midfield, I can also play as central defender and for me that is no problem. Honestly, there comes a time when you do not care what position you play, because the important thing is to be on the pitch.
"I will fight no more in practice to stop being an impact player, this season we will have the Champions League, which is a tougher competition and will be important for us all to perform I'm in a great shape because I want to start well. I feel good, and although I did not play in Malaga, the [pre-season friendly] match against Fiorentina helped me a lot to prove I can play more for Valencia."