4) Christoph Kramer – Borussia Monchengladbach
An extremely defensive minded midfielder, Kramer is exactly what the club needs as he would give the rest of the team the freedom to go forward.
Currently on loan at Monchengladbach from Bayer Lverkusen, he may not be available in January unfortunately for the North Londoners.
The Gunners will also face competition from rivals Tottenham Hotspur, making the transfer even more difficult.