The new five-year contract will keep the youngster at Ibrox until the summer of 2017.
Wallace has become the fourth Rangers player to sign a new contract with the Scottish outfit this week.
Barrie McKay, Lewis Macleod and Robbie Crawford signed new deals with the club on Tuesday.
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The start of the 2017-18 Premier League season is just around the corner and is shaping up to be one of the most competitive yet.
As always it is the so called “big clubs” that have splashed the most cash in the transfer window so far this summer. Manchester United or City? Arsenal or Tottenham? Who are the winners and losers of the transfer window so far?