Ibrox side Glasgow Rangers forward Kenny Miller has played 27 times this season.
Armstrong has been a key player for Celtic this season, and it has not gone unnoticed by the former Glasgow Rangers man.
Glasgow Rangers have made some astute signings during the January transfer window in years gone by.
Mark Warburton’s Glasgow Rangers are third in the Scottish Premiership table at the moment.
Ferguson was stripped of the Rangers captaincy under Le Guen.
Glasgow Rangers midfielder Niko Kranjcar could be on the sidelines for a while with a knee injury.
Glasgow Rangers midfielder Joey Barton is serving a suspension at the moment.
Rangers midfielder Joey Barton's future at Ibrox is already in doubt.
Glasgow Rangers midfielder Joey Barton has been suspended by the Ibrox outfit for a training ground bust-up.
Glasgow Rangers midfielder Josh Windass’s performance in the Old Firm derby impressed Chris Sutton.
His time at Rangers was interrupted by the lure of the Premier League, but former captain Barry Ferguson is an all-time great at Ibrox.
He only joined the club at the age of 37, but David Weir went on to enjoy a remarkable end to his career in over four years at Rangers.
Barry Ferguson backs Celtic to win the Scottish Premiership title and says that Aberdeen are becoming the new Rangers.