Anthony Martial and Scott McTominay scored for the hosts at Old Trafford, where City suffered a seventh Premier League loss of the season, but Bernardo is adamant we must react positively at the Etihad Stadium on Wednesday.
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“We need a reaction,” he declared in the wake of the derby.
“After a defeat we always need a reaction. Obviously it is always better when you win.
“We are playing Arsenal in a big game at home with our fans and we want to give them the three points.”