Arsenal manager Mikel Arteta has welcomed Kieran Tierney back into the Gunners' squad for this week's Champions League match against Sporting Lisbon, but it might not be enough for the defender to save his career with the club. Scotland defender Tierney spent last season on loan at Real Sociedad after it was made clear he didn't feature in Arteta's plans. However, a permanent summer exit became impossible after he picked up an injury on international duty at Euro 2024. Despite Arsenal knowing