Former Rangers defender Butcher won three league titles in four years at Ibrox.
Pedro Caixinha faces a major dilemma at Rangers this summer which could prove impossible to solve.
Glasgow Rangers have endured a tough time since returning to the Scottish Premiership, and Butcher has suggested that the gap to Celtic is going to be extremely difficult for the Ibrox side to close.
Rangers parted ways with manager Mark Warburton on Friday.
Mark Warburton’s Glasgow Rangers are struggling to keep up with Old Firm rivals Celtic in the Scottish Premiership this season.
Mark Warburton’s Glasgow Rangers could take three years to challenge Old Firm rivals Celtic, suggests Terry Butcher.
The 23-year-old is a long way from being England's main man these days.
Ibrox side Glasgow Rangers went down 2-0 at Hearts.
Ibrox side Glasgow Rangers are still adapting to life back in the top flight.
Barton hasn't featured for Rangers since September following an alleged bust-up with Ibrox boss Mark Warburton.