Arsene Wenger has already began planning his next big transfer for the January window with Mats Hummels on top of his list.
The World Cup winning defender has been linked with many top European clubs such as Manchester United and Barcelona but it seems it could be Arsene Wenger that wins the race for his signature.
Despite an expensive summer window for Arsenal which included players such as Alexis Sanchez and Danny Welbeck joining the club, Wenger is still prepared to spend nearly £35 million on reinforcing his leaky defence.
Even now after Per Mertesacker and Laurent Koscielny seemed to be stabilising Arsenal's backline, Wenger still wants to add a couple of big names to make his side serious Champions League and Premier League contenders.
To make things better for Arsenal, Borussia Dortmund are currently on a terrible run seeing them slip down to 13th in the Bundesliga even after a summer spending. This poor run of form has caused unrest within the team and if any top players were to leave Dortmund, now would be the perfect time.
Hummels is no stranger to big games as shown in his credentials. He has featured in both a World cup and Champions League final including and is a well respected first choice centre back Germany.