Bain says Osasuna failed to deal with the volume of fans

The Ibrox club have submitted a complaint to Uefa after ugly scenes involving visiting fans and riot police during their Uefa Cup tie in Pamplona.

Bain told BBC Scotland: "There's a general lack of understanding as regards the numbers we take (abroad).

"We have communicated this but it seems to have fallen on deaf ears"

Supporters claim Spanish riot police charged at them for no reason, lashing out with sticks, fists and kicks.

Fans have spoken of police lashing out with sticks, fists and kicks before, during and after the match at Osasuna's El Sadar stadium.

The Glasgow club have since officially complained to Uefa about the lack of segregation and heavy-handed policing at the match.

Fans were buying up tickets and moving towards the Rangers end because there were no stewards and no barriers to stop them. Rangers chief executive Martin Bain

Bain continued: "What's really, really disappointing is that despite going to a pre-ops meeting prior to the game, despite assurances from everybody including the police, the local council and the club itself none of it was in place when our fans arrived at the stadium.

Rangers admit more away fans than were allocated seats for the away section gained entry to the 20,000-capacity stadium but criticised the Spaniards for not being prepared for such an occurrence.

But Bain said: " If you think you're going to have a problem with touting or indeed you have a problem with the club (Osasuna) possibly selling tickets when they shouldn't then if you ensure that there is proper segregation in place then what you can possibly prohibit is movement in the stadium.

"Generally if our fans buy a ticket that they shouldn't be buying in the away section they will try to migrate to the Rangers end.

"If there's proper segregation then that migration can't take place and then you don't get overcrowding in the Rangers end.

He added: "And what happened on top of some of the problems that we faced was that fans were buying up tickets and moving towards the Rangers end because there were no stewards and no barriers to stop them.

"This creates overcrowding and then of course there's a bit of a push from the back and the police wade in from the front."