Manchester United boss Marc Skinner says his side want "revenge" against Chelsea when the two sides meet in next month's FA Cup final.United beat rivals Manchester City in Sunday's semi-final to secure a trip to Wembley for the third successive year.While they go into the game as holders, United tasted defeat by Chelsea in their maiden FA Cup final appearance in 2023, before making a triumphant return to Wembley 11 months ago, beating Tottenham 4-0 to claim their first major piece of silverware.