Scottish national team are no longer at the EURO 2020 and one of their best players, defender Kieran Tierney ‘went to work’ straight away. Left back extended his stay at the Emirates for five additional years.He arrived from Celtic in 2019 in a move worth around 35 million USD (3.7 billion KSH) and has now signed with the north-Londoners until 2026.The 18 Arsenal outcasts under Unai Emery – where are they now?Despite the injury problems during his time in the English top-tier, the left-back has become a key part of Mikel Arteta’s squad. Tierney managed to establish himself as a leader in the group and has earned the love of Arsenal supporters in a short period of time. The 24-year-old became one of Arteta’s most reliable players and had injuries not intervened, Tierney would have made considerably more than the 62 appearances.Arsenal reshaping the back four – White is coming, Aarons to replace BellerinHe was primarily a left flank defender, where has proved a highly effective operator at both ends of the field, but he can also play on the left of a back three.In what looks likely to be a busy summer for Arteta, securing Tierney’s long-term future is a significant move. Now that future at left back is secure, Arsenal hope Emile Smith Rowe will follow. Aston Villa made a bid for the 20-year-old attacking midfielder this week but were rejected.Arteta is expected to make more signings – the initial bid for the Brighton and England centre defender Ben White was rejected but Gunners will try again for sure.