Rangers manager Walter Smith has warned his side their European adventure will come to an end in Pamplona tomorrow if they produce a repeat of last week's Ibrox performance.
Smith urged Rangers to take Osasuna as seriously as they would any Spanish side as they look to progress to the UEFA Cup quarter-finals.
Rangers scraped a 1-1 draw in last week's home leg in Glasgow.
And Smith believes that result has placed Osasuna in the box seat heading into tomorrow's last-16 second leg.
Smith said: "I think Osasuna with home advantage will be favourites to go through and we will have to play exceptionally well to achieve a result in a place that is very difficult to come and win."
Osasuna, who dominated during the first leg in Scotland but failed to make their superiority count, have proved a tough nut to crack on their own pitch in recent times.
Last season, they lost just four of 19 home matches in La Liga, while during the current campaign they have already beaten Atletico Madrid in the cup, and taken league points off Barcelona and Valencia.
That game against third-placed Valencia came at the weekend, and saw Osasuna come within minutes of recording a victory before Fernando Morientes popped up to score a late equaliser.
Smith watched the match, and believes Osasuna deserved to take all three points.
"Osasuna are a good team, they play this small-team card all the time but they've got some good players," Smith said.
"In Spain it is known as a place that is never easy to come to and take points, you look at the standard of team Valencia are and they were very fortunate to get the 1-1.
"I thought Osasuna deserved to win the game on Sunday."
Rangers can consider themselves fortunate to have scraped a draw from the first leg with Osasuna, with Brahim Hemdani scoring a late equaliser.
Rangers also rode their luck during the first half of their Old Firm clash with Celtic on Sunday, before recording a 1-0 win at Parkhead.
Lady Luck may be smiling on the Ibrox club at the minute, but Smith is not counting on good fortune to help his side out tomorrow.
"We'll need to perform very well. The luck will come second, I don't think luck will be enough in terms of achieving the result that we want," he said.
"We will have to do exceptionally well, and play exceptionally well if we want to win this game."
Smith is also hoping his side can take confidence from their win over Celtic, especially as it came just days after what he admits was a poor display against Osasuna.
"It certainly doesn't do us any harm. We were disappointed with our overall performance in the game against Osasuna on the Thursday," he said.
"Having a win like that doesn't do us any harm going into the next leg.
"More than anything else we just wanted to show that the way we played in the first leg wasn't the manner in which we have been playing over the last few weeks.
"We have to improve in all aspects of our play from the game last week. That was as poor as we've been in any of the games.
"Regardless of what kind of style we play, or what manner we are made to play in by the opposition, we will have to improve in everything."
Rangers scraped a 1-1 draw in last week's home leg in Glasgow.
And Smith believes that result has placed Osasuna in the box seat heading into tomorrow's last-16 second leg.
Smith said: "I think Osasuna with home advantage will be favourites to go through and we will have to play exceptionally well to achieve a result in a place that is very difficult to come and win."
Osasuna, who dominated during the first leg in Scotland but failed to make their superiority count, have proved a tough nut to crack on their own pitch in recent times.
Last season, they lost just four of 19 home matches in La Liga, while during the current campaign they have already beaten Atletico Madrid in the cup, and taken league points off Barcelona and Valencia.
That game against third-placed Valencia came at the weekend, and saw Osasuna come within minutes of recording a victory before Fernando Morientes popped up to score a late equaliser.
Smith watched the match, and believes Osasuna deserved to take all three points.
"Osasuna are a good team, they play this small-team card all the time but they've got some good players," Smith said.
"In Spain it is known as a place that is never easy to come to and take points, you look at the standard of team Valencia are and they were very fortunate to get the 1-1.
"I thought Osasuna deserved to win the game on Sunday."
Rangers can consider themselves fortunate to have scraped a draw from the first leg with Osasuna, with Brahim Hemdani scoring a late equaliser.
Rangers also rode their luck during the first half of their Old Firm clash with Celtic on Sunday, before recording a 1-0 win at Parkhead.
Lady Luck may be smiling on the Ibrox club at the minute, but Smith is not counting on good fortune to help his side out tomorrow.
"We'll need to perform very well. The luck will come second, I don't think luck will be enough in terms of achieving the result that we want," he said.
"We will have to do exceptionally well, and play exceptionally well if we want to win this game."
Smith is also hoping his side can take confidence from their win over Celtic, especially as it came just days after what he admits was a poor display against Osasuna.
"It certainly doesn't do us any harm. We were disappointed with our overall performance in the game against Osasuna on the Thursday," he said.
"Having a win like that doesn't do us any harm going into the next leg.
"More than anything else we just wanted to show that the way we played in the first leg wasn't the manner in which we have been playing over the last few weeks.
"We have to improve in all aspects of our play from the game last week. That was as poor as we've been in any of the games.
"Regardless of what kind of style we play, or what manner we are made to play in by the opposition, we will have to improve in everything."
Copyright (c) Press Association
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