Arsenal boss Arsene Wenger admits he's keen to buy a new defender this summer.

The Frenchman said at the end of last season that Arsenal's "average" performances at the back cost them dearly in their pursuit of a first Premier League title in six years.

He is keen to find a centre half to partner Thomas Vermaelen at the heart of the Arsenal defence for next season and has been splitting his time in South Africa between scouting and commentating for French television.

"We are not close (to signing anyone) at the moment," Wenger told arsenal.com.

"We are quiet. But there will be something happening before the end of the World Cup - certainly on the defensive side."