Of the Osasuna side that started last week's first leg at Ibrox, only four players began Sunday's 1-1 La Liga draw with Valencia. With Osasuna producing decent performances in both of those matches, it remains to be seen which side coach Jose Angel Ziganda will select.

Smith has studied both games, and while the names may have changed, he is convinced Osasuna will still employ the same gameplan for the clash at the Reyno de Navarra.

"I don't think we can overly concern ourselves with it," Smith said.

"I think we've got a fair idea what they will do, their formation doesn't change a great deal even though their personnel might change now and again.

"We know what to expect formation-wise."

Smith is more concerned that his side put on a better showing than they did in the first meeting between the two, where Rangers escaped with a barely-deserved 1-1 draw thanks to Brahim Hemdani's last-gasp equaliser.

The former Scotland boss admits they were poor at Ibrox, but he now prefers to look forward instead of back.

"Nobody can run away from that, that's the way we were in that game," said Smith, who took over the coaching reins at Ibrox in January following the departure of Paul Le Guen.

"As I said, that has not been that way all of the time - it's been parts of games where we have played well recently, and other parts where we haven't played so well.

"But for that game we were poor from start to finish and that in itself is a major motivation for us."

As for his own tactics for the match, Smith admitted: "I think that it depends on the way the game goes.

"Obviously Osasuna have the advantage of the away goal just now so we'll have to make sure that we do better in terms of attacking than we did last week, but it will be a very very difficult game."

He added: "I think they are a good team. I think they have been plagued a bit by the same problem Rangers have had during the season, with a level of inconsistency.

"But I don't think they are a team that are easy to break down.

"They may not score a lot of goals but they haven't conceded an awful lot either and they are always looked upon as a team who are very difficult to play against.

"I think they have one or two exceptional players in their team. We knew that before the first game, and I think they showed on Sunday night against Valencia (in a 1-1 draw)."

Rangers will be without influential captain Barry Ferguson for the game through suspension, while Andy Webster (knee), Steven Smith (groin) and Thomas Buffel (knee) are all out injured.

However, Ferguson, Webster and Smith are all with the squad in Pamplona, and manager Smith is delighted to have them along.

"Barry asked to come, which is good of him," Smith said.

"As far as our injured players are concerned it just gives them a little bit of a break from a daily routine which is fairly mundane when they're injured and there is a little bit of frustration there, so it breaks it up a little bit for them."