On 4 September 2015, Arca joined Northern League Division Two club South Shields. He scored on his debut for the club, in a 1–1 draw with Stokesley Sports Club at Mariners Park. He later scored a goal against Ryton and Crawcrook Albion as the Mariners won 4–0 in front of a crowd of 1,045, while his third goal for South Shields came when he scored a free-kick in a 4–0 victory at Esh Winning. Arca went on to score 12 times in his first season with the Mariners as they were promoted to Division One of the Northern League as champions.