The Real Madrid-owned player stated a victory against the champions was in his side's hands before they conceded a late equaliser, but they must now concentrate on future fixtures
The Mestalla outfit held defending league champions Barcelona to a 2-2 draw, a result which sees them collect their 10th point after four games.
After the match, Canales, who is on loan at Valencia from Real Madrid, was happy with the result, but confessed his side could have taken the full three points.
"The truth is that, looking at the match, not getting the victory leaves a bitter taste," he is quoted by AS as saying. "But a draw is good. It is clear we have good dynamics and we can get good results.
"Right now, it is anecdotal to be leading the table, we have to think about the game against Sevilla and that is it.
"We have to keep working in the same manner. The players are united and there is a lot of hope to make a good season. I am very happy with the work of coach [Unai] Emery."