Manchester United boss Sir Alex Ferguson is predicting a 'feisty' encounter with Blackburn Rovers on Monday night.
United could go five points clear at the top of the Premier League if they win at Ewood Park but Ferguson has urged his side to stay cautious.
"The game at Blackburn has always been a difficult match," said Ferguson.
"It is a local derby and tends to be a bit feisty.
"It will be a very difficult game. That is the way it is going to be from now until the end of the season."
The champions clinched the title at Ewood Park last year but suffered a shock defeat at Old Trafford earlier this season to Blackburn.
United are currently the league's form side, having won nine of their last 10 matches.
