As two of the biggest clubs in Europe, both Rangers and Celtic have saw some of the biggest names in world football pass through their doors over the years.
With domestic and European success often going hand in hand at both Glasgow giants, a number of huge talents have played and managed at Ibrox and Celtic Park - though many have folded under the pressure of Glasgow goldfish bowl.
But with so many big names coming through the doors at both, who are the richest former Old Firm players and managers in the world in 2025?
Here are the richest former Old Firm players and managers highest yearly salary, according to CelebrityNetWorth.
9. Ian Wright
A regular pundit on TV, the ex-Arsenal legend was at Celtic Park for a short spell in the late 00s. He has a reported net worth of $20million. | SNS Group 0141 221 3602
10. Aaron Ramsey
His loan spell at Rangers was not successful, and he is more remembered for missing the vital penalty in the Europa League final shootout defeat to Frankfurt. That said, he's still one of the richest former Old Firm players, with a reported net worth of $25million. Now plays for Cardiff City. | Getty Images Photo: Getty Images
11. Mikel Arteta
Understandably on this list due to his success as a manager at Arsenal, the Spanish midfielder was a popular figure during his playing days, which included a successful spell at Rangers. He has a reported net worth of $25million. | Getty Images Photo: Getty Images
12. Joe Hart
Retiring last summer with a host of trophies under his belt, Hart enjoyed an extremely successful career at Celtic, Manchester City and England. He's since moved into punditry, impressing viewers with his unique insight into the game. He's high up on this list with a reported net worth of $30million. | SNS Group Photo: SNS Group