PSL and CAF Champions League holders will visit Abafana Bes'thende at Princess Magogo Stadium in much better form having moved to second on the log table after winning their last four league matches on the spin.
The quarter-final loss suffered to Arrows stretched Mosimane's side's winless streak to five games in all competitions at the time.
However, facing Sundowns at this juncture is a different prospect than it was on April 8 and Larsen is the first to admit that.
"Firstly I think the players will draw inspiration from that victory and it wasn't too far back that we managed to beat them," says the Arrows coach.
"We'll draw a lot of positive out of that performance, and we met Sundowns at the time when they were going through a slump to be honest, and since then they've picked up form and they've probably won three or four on the trot, and they're sitting second in the league table with games in hand.
"They're a different proposition altogether this time around so we really have to be at our best to get something out of this game.
"We know they are the best team in the league and their style of play and results speak volumes, and credit must be given to them. But we always have the underdog tag whenever we play against the so-called bigger clubs and we thrived on that and all the pressure will be on Sundowns."
Arrows go into this game having previously lost to Polokwane City on Tuesday and their ambitions of a top eight finish are now at peril as they lie eighth on the log table with five league matches before the season ends.
The former Bloemfontein Celtic coach said the win against Platinum Stars in the Nedbank Cup took a huge toll on his players and he expects them to turn things around against Masandawana.
"In terms of coming back from the defeat, firstly one thing we've done well this season is bouncing back after the defeat," he said.
"We've done it throughout this season, we've rarely lost two in the row this season and I'm expecting the team to bounce back again.
"Factors are, there are different factors that contributed to the performance we had [against Polokwane City]. Number one, it was huge performance against Platinum Stars on Saturday, Polokwane did not play [on that day], they were fresh and we played on Saturday and three days later on Tuesday, so it took a bit out of us.
"But we are not a team to make excuses and they deserve a victory, and like I said, we are team that usually bounce back after defeats and we intend to do so."