Manager’s current deal to expire at end of the season Spaniard can expect big increase on £10m-a-year salary Mikel Arteta has agreed a long-term contract extension with Arsenal that includes a hefty pay rise in recognition of his success last season and could take his reign as the manager beyond a decade. The three-year deal he signed in September 2024 expires at the end of this season and talks have been ongoing since May when Arsenal ended their long wait to be champions . Negotiations were p…