Sir Alex Ferguson once described dealing with Tottenham chairman Daniel Levy as an "experience more painful than my hip replacement".
The former Manchester United boss was speaking after he had managed to sign Bulgarian forward Dimitar Berbatov from Spurs in 2008.
In fact, that signing was actually the last time that the Red Devils were able to bringing in a player from the London club.
In the 12 years since, enquiries have been made for various names, most notably Eric Dier, Christian Eriksen and Toby Alderweireld in recent seasons but they have hit a brick wall.
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