The architects charged with revamping FC Barcelona's iconic Camp Nou stadium have given Sports Management an exclusive snapshot of their competition-winning design for the project.

Japanese practice Nikken Sekkei and Catalan firm Joan Pascual – Ramon Ausio Arquitectes are masterminding the design of the new ground, which will have a semi-transparent roof, an increased capacity of around 105,000 and three skyrings surrounding the perimeter.

“FC Barcelona is a club for the fans, not for the owners,” said Nikken Sekkei’s lead architect Takeyuki Katsuya in an interview with Sports Management. “They want equality for the stadium, where the views and experiences of everyone are equal. For that reason our big change is to make the design totally symmetrical to represent this democratic nature.

“The current stadium roof changes height, making it asymmetrical. We’ll change that and create a very simple balanced shape around the pitch. Then the new sky rings around the outside create more symmetry.”

The concept of the design – described as “open, elegant, serene, timeless, Mediterranean and democratic” by the judges who selected it – is inspired by the city’s historical buildings, classic architecture and warm climate.

Katsuya said: “We studied the brief and decided we wanted to make a really spectacular scheme. During our research, we found the city has a very rich history and so the project reflects all that. We also derived a lot of inspiration from the original stadium, because we want to keep its essence and soul while creating something new and great.”

Joan Pascual, the leading Catalan architect involved with the project, once worked with Camp Nou’s creator Francesc Mitjans at Barcelona’s architecture university. “I understand Mitjans’ spirit, and most importantly I understand his stadium," he told Sports Management. “Our starting point was revision, not reinvention. There’s something about the soul of Barça that is special and has to be understood to build a stadium like this.”

To reference this “Barca soul”, the architects have maximised spaces in and around the stadium to promote openness and outdoor space where people can enjoy the sun and fresh air. The skyrings, which will glow in the club’s colours at night, will have space for socialising and walking with views towards the sea. Meanwhile amenities typically found in an interior concourse – such as food and beverage stalls – will be placed outside the stadium to create extra space, with the floor rising to fold over them in polygon shapes “like origami”.

“We thought if we created a traditional concourse it would disturb the flow and continuity between the building and the club’s wider leisure district,” said Katsuya. “We analysed the movement of people, and we decided to take away the concourse altogether. We’ve removed the walls and gates to truly open up the stadium.

“People will be able to come to Camp Nou on a match day and have a day full of excitement in one area – visiting a café, the club’s museum, enjoying the game then going for a meal after.”

The club is currently finalising the €360m (£311.7m, US$405.6m) in funding needed to build the stadium, which might be raised in part through the sale of naming rights. Confirmation of the final design details and a tendering process will also follow shortly. The ambition is to complete the ground in time for the 2020/21 La Liga season.