Carlos Cuellar has condemned the "stupid" and "crazy" Scottish Premier League plans which have left Rangers with a punishing run of matches.
The SPL agreed to extend the league season by four days if Rangers reach the Uefa Cup final on May 14.
But under those plans Rangers would have to play their final two SPL matches and the Scottish Cup final in the space of five days, and Cuellar believes they need a longer extension.
If Rangers lose to Fiorentina in their Uefa Cup semi-final, the season will not be extended and Walter Smith's side will have to play their final four league games in a nine-day stretch.
Celtic have also opposed the plans, for differing reasons. Celtic are upset the league could be extended at all, but Cuellar believes they will be glad to see Rangers forced to cram their remaining fixtures into such a short space of time.
"Their chances of winning the league will be greater that way," he told the Daily Record.
"But if the league don't want to accommodate us or be more understanding then it's almost as if they want to see us struggle.
"All we need is one more week. To put us in this situation is stupid, it's crazy. But we must be strong enough to cope.
"It's incredible that our own league can make things so difficult for us when we are trying to represent Scotland in Europe. This would not happen anywhere else. The situation is crazy. I can't believe how things work in this country."