Arsenal missed out on signing a new striker in the summer but just weeks after the window slammed shut, the Gunners are already being linked with forwards for January. The Gunners once again opted to strengthen in other key areas as the likes of Riccardo Calafiori and Mikel Merino jetted in. However, there is still a feeling that Arsenal missed a trick not signing a new number nine, despite the making a late move to sign Raheem Sterling on loan. READ MORE: Paul Merson says what could be a big ‘problem’ for Arsenal and Mikel Arteta v TottenhamAnd while Theo Walcott has suggested Sterling and Ar…