Kenny Miller at Rangers
The former Scotland international striker was on the books of Rangers from 2000 until 2001 and moved to Celtic in 2006.
The 39-year-old striker, who is now on the books of Partick Thistle, left the Bhoys in 2007 and had two subsequent spells at Rangers.
Miller has explained why he switched to Celtic despite having already played for Rangers.
"I felt going to Celtic at that time and playing in the Champions League.. I had a wee taste of it with Rangers, but I had only played one game.”
Meanwhile, there is a genuine title race in the Scottish Premiership this season, with Rangers providing a stiff competition to Celtic.
Steven Gerrard’s side are two points clear of second-placed and defending champions Celtic at the top of the Scottish Premiership table at the moment.
While Neil Lennon’s side remain the strongest team in Scotland, Rangers are going to push the Hoops all the way this season.
Rangers will take on Heart of Midlothian away from home in the Scottish Premiership after the international break, while Celtic will face Ross County at Celtic Park.
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