Arsenal have placed former Tottenham star Steven Caulker on their summer transfer wish list as Arsene Wenger looks to reinforce his defence, reports The Daily Mail
Once Bacary Sagna makes his expected departure from the Emirates Stadium, Arsenal will be left with just three capable centre-backs in the squad and Wenger is looking to add another back-up option to first choice pair Laurent Koscielny and Per Mertesacker.
Thomas Vermaelen already warms the benches for Arsenal, meaning the Cardiff City captain would likely come in as a fourth choice. He is the second Cardiff player to fall on Wenger's radar after the Arsenal boss showed an interest in goalkeeper David Marshall.
Cardiff are looking to trim their squad after being relegated from the Premier League and Swansea, Liverpool and Southampton have all shown an interest in the centre-back.
The 22-year-old has come a long way since leaving Tottenham in an £8 million deal last summer but a move to the Gunners would still come as somewhat of a surprise to the Premier League.
He was never given a chance to impress at White Hart Lane, instead being loaned out to Swansea before joining the Bluebirds permanently, but he has since shown he has what it takes to make it in the Premier League.
Caulker featured in all 38 league games for Malky Mackay and Ole Gunnar Solskjaer, proving to be a reliable figure and was quickly given the armband.
For Arsenal, Caulker would shore up options in defence a provide further competition for current stars.