Arteta Urges Arsenal to 'Knock Another Big Team Out' in League Cup Semi-Final vs Chelsea

• Mikel Arteta wants Arsenal to learn from last season's League Cup semi-final exit against Newcastle.
• Arsenal, the Premier League leaders, will face London rivals Chelsea in the semi-final first leg on Wednesday.
• Arteta emphasized the need to be more efficient this year after a painful exit last season.
• Winning the League Cup could provide energy and belief, acting as a springboard for bigger trophies.
• Arteta will face new Chelsea boss Liam Rosenior, whom he played against in the 2014 FA Cup final.

Why It Matters: Arteta pushes Arsenal to overcome Chelsea in the League Cup semi-final, aiming for efficiency and silverware.