After the world record sale of Gareth Bale to Real Madrid last summer, Spurs boss Andre Villas-Boas went on a monumental spending spree, but made one particularly perplexing transfer move - selling promising centre back Caulker to promoted Cardiff City for £8.5m.
Unsurprisingly, 22-year-old Caulker has gone on to have an outstanding season for Ole Gunnar Solskjaer's men, even though the Bluebirds are languishing in the relegation zone. His superb form in South Wales has led to an England recall, and he has a genuine shot of sneaking into Roy Hodgon's 23 man squad for the World Cup in Brazil this summer.
But whilst there were question marks over Villas-Boas' decision to sell Caulker to Cardiff, it has emerged that Tottenham are able to buy the defender back this summer - whether through a buy-back clause or a first option deal between the two clubs remains to be seen - but less than a year after leaving North London, Caulker could return.
His impressive performances haven't gone unnoticed though, and Liverpool have also been linked with a summer swoop for Caulker - with manager Brendan Rodgers familiar with the defender having worked together during their time at Swansea City back in the 2011-12 season.
It wouldn't be the first time that we have seen a club move to bring a player back shortly after selling him, with Chelsea forking out almost £20m more than the £3m they sold Nemanja Matic for back in 2011. Matic has been extremely impressive since returning to Stamford Bridge from Benfica in January, and Spurs would be hoping that Caulker would have the same impact should he return - but whether it's Tim Sherwood or a new manager making the decision, they may need to move quickly to secure his services.