The game is level at 3-3, with the Gers taking a slender advantage into the return leg with away goals.
Nathan Patterson, Danny Finlayson and Ciaran Dickson were all on the scoresheet three weeks ago in Switzerland as Young Boys drew level with an injury time equaliser.
Patterson is hoping they can do enough to progress to the next round, he said: “It was a great experience in the first-leg, obviously it is our first time in the tournament but I thought we done really well.
“It will obviously be a tough game, they are good opposition but we are a great side as well so we will just need to play how we play and hopefully we can do well.”
Midfielder Ciaran Dickson says the players are enjoying having the opportunity to play in the competition.
He explained: “It’s obviously our first time there as an academy and as our group and it was a great experience in the first-leg and hopefully we can go as far as we can in this tournament.
“You want to play against the best players in Europe and test yourself and see how could you do against them so it’s a good experience for all of us.
Entry is pay at the gate (cash only) and costs £5 for adults and £3 for concessions. Kick-off is 7pm.