Inter Milan coach Luciano Spalletti recognises how important is their Champions League showdown with PSV Eindhoven.
Inter need to beat PSV and Tottenham Hotspur not to win at Barcelona to make sure of their place in the Champions League last 16.
“We often fail to keep our concentration up for the whole game and when that happens, our opponents take advantage," said Spalletti.
“The team are fine. Juventus and Tottenham are two top teams, one's been winning for 10 years, the other reached the Champions League quarter-finals last season.
“We played on par with Juve and, if anything, we dropped points against Parma and Atalanta.
“You can lose in Bergamo, but not how we did [a 4-1 defeat]. We must maintain a high level over 38 games, so we have to do better.
“Only serious people work for Barcelona. The only mistake we can make is if we focused on their game.
“We must think about winning our own, against a team who were in the third pot, whereas we were in the fourth.
“They're also higher than us in their respective League. It's the most important match since I've been here, even more than against Lazio last season."
