Mikel Arteta has come under fire from a familiar source in the wake of Arsenal’s North London Derby triumph. Arsenal claimed the bragging rights over their bitter local rivals Tottenham Hotspur on Sunday. Mikel Arteta’s side were deserving of their 1-0 victory, but had to dig deep defensively to secure the three points. Gabriel Magalhaes was a star at the back, and the Brazilian centre-back was also able to provide the winning goal in the second half before celebrating with the travelling Arsenal contingent. Arteta celebrated on the sidelines, too, with his coaching staff. The former midfielde…