5. Robert Campbell
Campbell Celtic’s career was a short 6 months spell, where he played 12 league games before being sold to rivals Rangers in January 1906.
He made his Rangers debut against Port Glasgow on 20 January 1906. Campbell was a right-back but was later converted to a striker. He spent eight years with Rangers, making 211 appearances and scored 56 goals.
He won three Scottish league championships, three Glasgow Cups, two Charity Cups and the Scottish National Exhibition Tournament in 1908 with Rangers. After his retirement, he became a director of Rangers in 1926. He is widely regarded as one of the best players who played for both Celtic and Rangers
4. Kenny Miller
Miller is the only player post-WW2 to switch between these two sides twice. Signed by Rangers in 2000 for £2m, Miller spent just over a season at Ibrox before moving to Wolves on a loan move that turned permanent.
In 2006 though, Celtic swooped as Miller was available on a free transfer, and Miller’s first goal for the club was against former employers Rangers. However, the striker never became at regular starter for Celtic and he was quickly sold to Derby.
In 2008 Miller made history when he was signed by Rangers for the second time. It was an unpopular move amongst a proportion of Rangers’ support. After spending three years with the club and winning over the hearts of the fans again, he left the club in 2011.
In 2014, he signed for Rangers for the third time and played there for four more seasons.
3. Tully Craig
Tully Craig was a Scottish footballer who is best known for his time with Rangers. He was a versatile player who could play up front, in midfield or defense.
He was born in Laurieston and was signed by Celtic from Grange Rovers in June 1919.He made his first-team debut for the club in a 3-2 league win at Kilmarnock in January 1920. The left-half impressed on his debut, scoring two goals, but he was deemed to be too lightweight by Celtic manager Willie Maley and consequently spent most of his time at Parkhead in the reserves.
Maley sold Craig to Alloa Athletic in an exchange deal which saw Craig and two other Celts swapped for Willie Crilley. While Crilley would disappoint in the Hoops, Craig was a huge success at Alloa, and after only one season Rangers bought him for a fee of seven hundred and fifty pounds in 1923.
He spent 13 years at Ibrox, winning five league championships, two Scottish Cups, two Glasgow Cups and four Charity Cups, Craig retired from football in 1935. He sadly passed away in 1963.