#4 Ally McCoist and Neil Lennon
The rivalry between McCoist and Lennon was more a result of their circumstances than any real animosity but, as Lennon himself said, “In 20 years, they'll be showing footage of me and Ally squaring up to each other.” While it hasn’t been 20 years since that day in March 2011 when Celtic squared off against a struggling Rangers for a Scottish Cup match, it continues to make a great story about two managers going at each other on the touchline.
The Old Firm rivalry was at an all-time high with Rangers on the verge of going into liquidation and the tension erupted when three Rangers players were sent off that day in the course of their 1-0 defeat against their opponents. The combative meeting didn’t stop with the final whistle. As the two managers met to shake hands, it quickly descended into an infamous brawl.
McCoist made unbecoming comments to his counterpart which lead to an immediate scuffle near the tunnel. While the confrontation itself was minor it just added to the already tense atmosphere inside the stadium. Even though both managers said they shared a beer to smooth over matters, the Scottish government got involved in the situation.