It is mid-season in the English Premier League, the January Transfer window is opening and Arsenal have holes they need to fill. Aly Trost Martin, Nico Cantor, Christine Cupo & Alexis Guerreros each took some time to list what they think is Mikel Arteta's biggest concern heading into the winter transfer window and discussing how best to acquire each player. Big striker names such as Swedish national Viktor Gyokeres from Sporting in Portugal are amongst the stars Arteta should be eyeing.