BBC’s David Ornstein confirmed yesterday via Twitter that Arsenal had signed Borussia Dortmund defender Sokratis, and confirmation from the club and a formal announcement would come in July.

Defensive reinforcements were desperately needed after last season showed we desperately lacked depth, but with the Dortmund man coming in, will we now have to shed a defender to balance the books and the squad?

Rumours abound regarding Arsenal currently, and behind any move we do make will be Head of Recruitment, Sven Mislintat. The German will have masterminded the Sokratis deal, just as he did the January signing of Konstandinos Mavropanos.

This leaves us with Laurent Koscielny, Shkodran Mustafi, Calum Chambers, Rob Holding, Mavropanos and Sokratis as central defensive options. Even if we discount the crocked Koscielny, that is still five defenders who will be jostling for just two spots.

One of those rumours that are doing the rounds comes courtesy of the Metro. They report that Sven Mislintat is well aware of our defensive numbers, and is eyeing one of our men for a quick sale to bolster our transfer kitty as well as our young defender’s chances.

Shkodran Mustafi suffered a less than reliable season last campaign. His positioning and a fair amount of high profile errors that led directly to goals put the spotlight on the German, and this summer he has been omitted from the Germany squad for the World Cup on the back of his performances.

Mislintat will be aware that he could get a quick win with selling Mustafi, with Sokratis being a ready-made replacement for Mustafi. With promising youngsters Mavropanos, Chambers and Holding needing gametime too, that means Arsenal are due a sale - and Mustafi ticks the boxes for the most likely to head for the exit door.

There is nothing concrete right now, but keep your eyes peeled on The Arsenal Review for the latest developments.