The Colombian, who netted his side's second goal in their 2-0 first-leg win, believes that Los Che will raise their game in the return leg.
"We had a good game against a great opponent like Valencia," AS quotes him as saying. "Despite the result, it won't be easy there. One of the most important things is that we kept a clean sheet. We could have scored a third but they were also good.
"The game at Valencia will be like the one today - a good game where both teams want to play."
The two sides will meet again at Mestalla in one week's time.