United legend and former City player Sammy McIlroy previews the key individual clashes in Monday's derby match, including:
Vincent Kompany vs Wayne Rooney
Sergio Aguero vs Rio Ferdinand
Yaya Toure vs Michael Carrick
Gael Clichy vs Antonio Valencia
Roberto Mancini vs Sir Alex Ferguson
To hear more of Sammy's expert opinions, listen to our Red Voices podcast.
When all the talking and training is done, the biggest game of the Barclays Premier League season could be decided by one contest between two players.
All over the pitch at the Etihad Stadium on Monday night, the men who make up the talented teams of Manchester City and Manchester United will be doing their utmost to win the war for their club - firstly by winning their own individual battle.
We asked Sammy McIlroy, a former servant of both sides and a manager with proven success in the Football League, to assess some of Monday night's most important head to heads in defence, midfield, attack - and in the dug-outs. Watch our free video to see what he had to say about Kompany vs Rooney, Aguero vs Ferdinand, Toure vs Carrick, Clichy vs Valencia and, of course, Mancini vs Sir Alex.