The Spurs right-back signed on at the Den on January 17 on a 93-day loan, but he will now stay at the Den for the rest of the Lions' Championship campaign.
One player who will not be in south London anymore this season is striker Andy Keogh, who has joined Blackpool on loan.
The 27-year-old, who has started the last two games under Ian Holloway, will be unavailable when the two sides meet next month.
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