Ally McCoist's team will face League Two outfit Rovers at Livingston in the Ramsdens Cup first round unable to play all of their seven summer signings.
The Glasgow giants are still operating under a transfer embargo but McCoist plans to field their new arrivals as trialists until the ban expires on September 1. However, Scottish Professional Football League rules mean that only two trialists can be fielded against Sunday's Coatbridge opponents.
That has left the Gers boss to decide whether former Kilmarnock stopper Bell will get the nod to make his Light Blues debut or instead start with reserve keeper Gallacher.
But Bell insists his 24-year-old rival - who McCoist plans to send out on loan once a replacement is signed - is good enough to do a job between the sticks.
He said: "Scott has been fantastic to work with. I saw him a few times in reserve matches last season and he is a very good goalie. He just needs games under his belt so I know it's not an easy ride for me whether it's Scott or someone else who comes in.
"Scott's got great ability and I have no doubts he will do well in the games. It's a fantastic opportunity for him."
Bell quit Rugby Park at the end of his contract in May but he may find himself playing only a bit-part in the first month of the new campaign.
Only players moving from Scottish sides can play as a trialist - ruling out Ricky Foster, Stevie Smith and Arnold Peralta - and no more than two can feature in the Ramsden Cup opener. None at all are permitted in the second round of the lower-league tournament or against Forfar in the first round of the Scottish League Cup.
And in League One, just two trialists are permitted in any game, but each individual can only play three games before they must be registered, leaving McCoist with a juggling act as he selects his team.
Rangers could potentially play seven games during the month of August and Bell is not overly happy about the prospect of missing out.
"It's going to be frustrating that I can only play as a trialist," he said. "It's going to be the hardest part of the season for me.
"That's out-with our powers at the moment so you just have to keep training hard and we do have a couple of good friendlies coming up, so there are games there to keep those of us who can't play in the competitive games on our toes.
"The manager has said he will pick teams to win games and none of the players will complain about that. We're in a difficult situation but all we can do is stay sharp in training and be ready when called upon."
McCoist admitted he has been left frustrated by the terms of the rules governing trialists and admits he will have to pay careful attention to who can play and when.
"It's extremely difficult for us. It's far from ideal. We will have to get it right because I don't have any doubt, we will be punished if we don't," he said.
"We will have to sit down and go through the administration side of it in terms of the rules meticulously.
"But compared to what we went through last year it is something we can handle. Not ideal but at least we know where we are and we will just have to handle it."
McCoist will now place his faith in much of the squad who won last year's Third Division title, but he said: "We will be starting with the same kind of team that we finished with last year. That's fine because it will give them the chance to establish themselves.
"I would be very hopeful that this year we might have greater competition for places, which - in my opinion - we didn't have at all last year."
Meanwhile, the Light Blues manager is "hopeful" a deal for defender Bilel Mohsni will be completed on Friday and is still keen to sign Bosnian international Boris Pandza on top of another goalkeeper and striker.
On Mohsni and Pandza, McCoist said: "I would be thrilled if we could get both of those boys."