Andre Villas-Boas has been given the green light by Tottenham chairman Daniel Levy to continue spending once the January transfer opens, according to the Mail Online.
Spurs spent around £108 million on players in the summer, with Roberto Soldado, Erik Lamela Christian Eriksen, Vlad Chiriches, Etienne Capoue, Paulinho and Nacer Chadli all joining the revolution at White Hart Lane.
And, despite signing seven new players in this latest window, Villas-Boas looks set to further add to his squad with a defender high on the priority list.
Villas-Boas has set his sights on a new left-back and continues to monitor Real Madrid's Fabio Coentrao.
The Spurs boss could also enter the market for another striker, with England international Jermain Defoe's future in doubt.
Spurs have made an impressive start to the season with their new players and currently sit in second place with four wins in their first five Premier League games.
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