Danny Rose impressed on loan at Sunderland last season and is now the first choice left-back under Andre Villas-Boas, leaving long-standing first-teamer Benoit Assou-Ekotto on the sidelines.
Assou-Ekotto has been a mainstay at left-back since joining from Lens in 2006, racking up 155 appearances for Spurs, while Danny Rose has only made 16 appearances for the north London club since joining from Leeds in 2007, starting out as a left winger.
Villas-Boas has clearly taken a liking to the England U21 international since returning from his loan spell on Wearside, as Rose played every game in pre-season and has now started both Premier League games and in the Europa League as well, while Assou-Ekotto hasn't even got a look-in.
The thought process behind Villas-Boas's decision may be down to a number of factors. Firstly, Rose is 23; six years younger than 29-year-old Assou-Ekotto, giving Rose more potential and room for improvement, while the Cameroonian has hit his peak and is unlikely to improve any more. Rose is one for the future, and Villas-Boas is looking to build a title winning side over the next few years.
Both defenders have their weaknesses in defending, which is worrying for a player who's job it is to defend. Assou-Ekotto is arguably the better defender of the two, but can be erratic and unpredictable, with a laid back attitude to his game which some fans are disgruntled by.
Rose gave a fairly good showing of himself in the north London derby at the Emirates, but was missing when his man Walcott was free to cross for Arsenal's only goal of the game slotted expertly by Olivier Giroud.
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