During this period Papas gained insights into world class high performance environments and sports and under the High Performance Program governed by the Australian Sports Commission and Football Federation Australia gained experiences working with the country's top potential talents as well as the Australian National Youth Teams both as a technical analyst and coach.

Papas credits this part of his journey as a major point of difference in understanding the requirements to manage professionally.

Papas then led the team through the play-offs even defeating rival South Melbourne 1-0 along the way, qualifying the club for their first ever Grand Final appearance, they eventually lost in extra time of the penultimate game 3–2.

Hence, the AIFF have joined forces with FIFA and PSV Eindhoven and have very big plans to shape the future by placing a major focus on the development of their Youth System.

However, prior to agreeing to stay in the anticipated role, Papas received another offer by the AIFF on 22 May 2012 after Raymond Libregts declined the offer to coach the India national under-23 football team and Pailan Arrows of the I-League, the team that grooms young players for professional careers.

Upon the completion of the 2012–13 season the Pailan Arrows project was disbanded due to a lack of funding [21] On 28 May 2013, and on the back of a successful period with the Indian U23 National Team.

Papas was able to revive the club's fortunes leading the Cannons to safety in the league and consolidating their position in the top tier of football in Victoria for the following season.

[28] Green Gully made it to the quarter-finals of the FFA Cup, before being knocked out by Canberra Olympic FC in the last minute of extra time.

They joined Ettifaq FC whilst the club was in the middle of a relegation battle after not having won in a league match for three months.

So to improve the results, whilst finding a playing style that was suited the characteristics of the playing group, was a fine balancing act but one we managed to navigate successfully.I was privileged to work in the Saudi Pro League and with their players and therefore understand deeply the affiliation they have for their country and what it means to them all as football really is the only sport that matters there.

[29]” In 2018, Papas was appointed Project Manager and Football Consultant for Belgian-based Talent Development Company, Double Pass.

Papas led an experienced group of European coaches in consulting to Japanese & US professional football clubs on how to optimise their talent development structures.

In 2018 Papas returned to India and teamed up again with Dutch Coach Eelco Schattorie to take over Indian Super League side Northeast United FC.

[30] Papas left NorthEast United FC prior to the finals series to link up with J.League team Yokohama F. Marinos for the 2019 season.

In January 2019, Papas was appointed Assistant Coach of J-league side Yokohama F. Marinos joining Ange Postecoglou and Peter Cklamovski as part of the Australian contingent at the club.

Papas was then elevated to Head Coach under Postecoglou in 2020 explaining "I think I'm in a really good period in my career, working for someone I really respect and can learn so much from and challenge myself.

After numerous offers at the end of season 2, Arthur resigned before moving to Buriram United FC, the biggest club in Thailand.

The team won their first games in the Asian Champions League group stage for the first time in 5 years and quickly adopted Arthur's high tempo attacking football.