Arsenal’s success under Mikel Arteta has been built from trust in youth and some shrew pieces of business in the transfer market. From Gabriel Magalhaes to Martin Odegaard to Kai Havertz, Arteta and sporting director Edu Gaspar have worked wonders in north London to build a squad that this season could finally go all the way and win the Premier League. Although there have been some questionable moves, Arteta has more often than not proven to be right in his judgement on who should be brought and who should leave, with the Aaron Ramsdale/David Raya fiasco the most recent and telling example. Ye…