Alan Hutton is expected to make his Barclays Premier League debut against Manchester United at the weekend after Tottenham confirmed his arrival from Rangers.
The 23-year-old Scotland right-back is the third signing at White Hart Lane in the January transfer window, with Jonathan Woodgate and Chris Gunter already bolstering Juande Ramos' defence.
A statement from Spurs confirmed: "We are delighted to announce we have reached agreement with Glasgow Rangers for the transfer of Alan Hutton."
According to Rangers boss Walter Smith, Spurs made "an offer we couldn't turn down".
They initially made a move at the start of the transfer window but Hutton turned down the chance to move south, before agreeing to a deal when Spurs went back in for him.
Damien Comolli, Tottenham's sporting director, watched Hutton before he impressed in Scotland's defeat to Italy last November. Manchester United were also linked with him during his progress at Ibrox.
