Tony Mowbray is anticipating a good workout for his side when Rovers take on Sparta Prague this afternoon (kick-off 3pm UK time).
Following last weekend's win over Barrow, the squad have spent a week working hard in Austria, culminating with today's match against the Czech giants Salzburg.
The Rovers boss believes Sparta will prove to be excellent opposition as the team continue to build up their fitness in preparation for the new campaign.
The game will be a progression for some of them from 45 minutes to an hour or maybe 70 minutes.
"Games in pre-season are obviously very important for your match fitness," said Mowbray.
"We've done lots of work, lots of running, lots of football drills, but the games ultimately is what gets the players fit.
"So the game will be a progression for some of them from 45 minutes to an hour or maybe 70 minutes.
"So it should be a good test. Sparta Prague have got a decent pedigree about them so we'll look forward to the game and getting players through without any injury problems.
"I am looking forward to it, they are a decent side, they have played a few matches, they'll be further on in their preparation that we are, so it should be a good test for us."
The team will be supported by a healthy following of fans out in Austria, and the boss is appreciative of their efforts in coming out to watch the lads play.
"It is great for the players to see how supportive and how passionate people are about Rovers," he added.
"So we hopefully apply ourselves and our game-plan as best we can and we can make it an enjoyable game for them to watch.
"Through pre-season, the first part they should be heavy-legged and tired. The game is just part of their training programme so I don't expect them to be really sharp and bright.
"But I expect them to have their natural instincts and competitive edge and wanting to get a result in the game."