Rangers midfielder Steven Davis admits this Champions League campaign could be the last for some time. The champions gained automatic entry to the competition this time around after clinching the Clydesdale Bank Premier League title last term but Scottish teams face a bigger battle to book their place among Europe's elite next season.
Only the SPL winners will have a crack at the Champions League and they will face the daunting prospect of qualifying, with Celtic and Rangers both failing to make the grade when faced with that hurdle in recent years.
"You never take anything for granted," said the Northern Ireland international.
"They are great occasions to play in. I've only had one previous experience, last year, in the Champions League.
"That's where every player wants to play, at the highest level, and we are getting a chance to do that.
"Further down the line, it won't be as easy for Scottish teams to qualify.
"Hopefully we can make the most of it this year, especially with it being the manager's last year as well."
"There is no doubt we are going to be underdogs in the games," he said.
"The money the other teams are able to spend and what they are getting from their leagues far outweighs what Rangers get.
"It's going to be difficult for us but we let ourselves down last time and we just want to go out and give a better account of ourselves and hopefully do better than we did last year."
He added: "I don't know if there is ever a good time to play Manchester United, especially away from home.
"But if we can go there and get a result, it will do the confidence no end of good.
"Manchester United are a great club and they have a number of world class players so it's going to a very difficult match for us.
"But it's one I think everybody will be up for and hopefully we can go there and give a decent account of ourselves."