Arsenal manager Mikel Arteta has expressed confidence that new signing Bruno Guimaraes will bring a new dynamic to the team, describing him as a "warrior with tremendous quality".

• The Brazil international joined Arsenal from Newcastle for a reported fee of £75 million.
• Arteta believes Guimaraes's "intuition and leadership and charisma" will "ignite something different" and push his teammates.
• Guimaraes watched Arsenal's 3-2 friendly defeat to Borussia Dortmund from the sidelines.