Mikel Arteta may be pleased with recent results at Arsenal , but that hasn't stopped him from becoming frustrated with one summer signing. The Gunners have been on a great run of form as of late, recently toppling Chelsea for the third time under Liam Rosenior this season to go five points clear at the top of the Premier League . Arsenal are still involved in four competitions this season, including the Champions League , FA Cup and the upcoming Carabao Cup final against title rivals Manchester