"I'd like to think about what happened and have some time to think things over," he told reporters. "The truth is we've been together for 24 or 25 days and we were training quite well.
"We had difficulties choosing the starting team because everyone was fit. But the second half against Netherlands and the first half against Chile were a problem. We started with a sluggish rhythm, we were too shy, not brave enough maybe and that's a pity because I didn't expect that.
"Chile played as expected. They stuck to their style, their physical style and they are very, very courageous. I think this team is good and fit but we'll have to take the best decision for Spanish football, and that applies to my position as well."
Spain face Australia in their third and final group match, with only pride left to play for.