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.
5. John Barnes
One of the greatest English wingers of his generation, his short stint in charge of Celtic in the 1990s saw him lose eight of his 32 games and he sacked shortly after his arrival. Still a big name on the football circuit, he has a reported net worth of $10million. | SNS Group Photo: SNS Group
6. Brendan Rodgers
After a long and successful career in management with Celtic, Liverpool, Swansea City and Leicester City, the Northern Irish boss has a reported net worth of $15million. | SNS Group Photo: SNS Group
7. Dion Dublin
Now more known to daytime television viewers as the host of property show Homes Under The Hammer. As a player he ran out for Manchester United, Coventry City, Aston Villa and Celtic, and was capped four times for England. He's now a regular pundit on the BBC on Football Focus, and has a reported net of $16million. | Getty Images Photo: Getty Images
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8. Jermain Defoe
The former England striker enjoyed a successful spell at Ibrox at the end of his career. Now more often seen as a pundit, he has a reported net worth of $20million. | SNS Group Photo: SNS Group