Could it really happen? Could Alex Ferguson and Roy Keane settle their differences in a more physical way than pointed remarks in books.
We're at the semi-final stage of Team 33's football Manager Battle Royale and both men are one step away from the biggest grudge match of them all.
All they need to do is get past other hardmen Jurgen Klopp and Diego Simeone. And it's up to you to decide who wins each bout.
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Klopp v Ferguson
When Dalglish was in charge of Liverpool, Fergie longed to knock them off their perch. Over two decades on and he got his chance to do that on and off the pitch as he defeated King Kenny in our quarter-final.
But Klopp has seen off every challenge that has come his way and Fergie will be hard pressed to take the Dortmund bruiser down.
Simeone v Keane
Two of the toughest midfielders of the '90s and early noughties go head to head in a no-holds barred battle for supremacy.
Keane will have an eye on fighting his way to a potential final against his former mentor, Ferguson, but Simeone is the exact opposite of a push-over.
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