Jese struck again in victory over Getafe on Sunday.
"Well, it isn't out of the question, nor is it madness, but there is a very significant generation of players who are the current champions. It's thanks to them that Spanish football has improved so much. So I don't see it as being all that easy," he said of World Cup selection.
"There are some really great players, so I couldn't say. I just have to keep on playing and see what happens."