Bruno Guimaraes signing completedDeal fully closed, official announcement made. First interview adds color, hints at debut vs Dortmund. Midfield rebuild complete. No further developments.Sources (2)Every word of Mikel's post-Dortmund press conference - Arsenal.comarsenal.comMikel Arteta targets more Arsenal signings amidst defensive crisis following £75m Bruno Guimaraes transfergoal.comUpdated Aug 9, 2026