The Seagulls boss took the club from the fourth division to the top tier and the Europa League in the process, and Gwargis spoke about the impact of the former Swansea City man back in Sweden.
He said, “I knew Graham from Sweden and I knew what he did with Ostersunds in getting them promoted through the divisions to the top league and Europe - it was a massive story in my country.
“It’s incredible and I know a lot who know him, and they all tell me that he’s a special manager - you can see by what he has achieved already in the game that it’s true. I was a ballboy when his Ostersunds side came and played my team Husqvarna back in August 2014.
“What he did with that side is remarkable, he got Ostersunds playing incredible football and scouted some amazing players that not many people had even heard of.
“He built a side that had so many qualities and everyone in the country looked up to him. Ostersunds isn’t a big city or town but he took them on a journey that was great for everyone in Sweden.”
Simon Rusk’s men travel to Leyton Orient tomorrow evening for their final group game of the Leasing.com Trophy, where avoiding defeat would see the side progress to the knockout stages of the competition.
Gwargis then discussed the rise to the first team of both Aaron Connolly and Steven Alzate - with the latter having plied his trade for tomorrow night’s opposition before his move to the south coast.
“To be honest I’m not surprised with how well they’ve done - I actually said to Steven during pre-season when Graham came to the club that I thought he’d make his Premier League debut this season,” he continued.
“To me it isn’t a shock that both him and Aaron [Connolly] have fared so well in such a big and competitive division - they are both very good players who have taken their chances and they’re living the dream, I’m very happy for them.
"It shows what can be achieved with hard work and making the most of an opportunity, and it gives all of us in the under-23s a really big thing to work towards."