What's it like to manage one of the Old Firm?

"Managing Rangers - and Celtic must be the same - is the hardest job in British football."

As new head coach Russell Martin - the latest man tasked with trying to break Celtic's dominance of Scottish football - checks in at Ibrox, he would do well to heed the words of former Rangers boss Graeme Souness.

Managing one half of the Old Firm brings with it an enormous amount of expectation, pressure and scrutiny.

Even those accustomed with football at the highest level have been shocked by the demands of being at the helm of one of Glasgow's big two.

"I didn't really know what I was going into," Souness, the European Cup-winning former Liverpool captain who managed Rangers from April 1986 to April 1991, told BBC Scotland's Managing the Old Firm series in 2010.

"If you're top of the league and not playing very good football, the pressure's off. You can be second and have had a couple of bad refereeing decisions but you're playing the better football and the pressure all goes on.

"That can bring you down. I hadn't experienced that before. I was coming into this job believing that I could handle everything in my stride. I came up here feeling invincible. What a fool."

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