Treble-winning strike duo Dwight Yorke and Andy Cole believe Manchester United should "take the game to Madrid" on Tuesday night.
The Reds legends told ManUtd.com that it's important Sir Alex's side doesn't sit back too much and try and soak up pressure. Instead, Yorke said, United should go on the front foot.
"The onus is on us now, to really try and take the game to Madrid," he said. "We need to do what they did to us – certainly early on – in the first leg. We need to get the crowd behind us and really turn the screw.
"I think it will be electric – it’s a European night at Old Trafford and we know what the fans here bring to such an occasion. It’s one of those games that everybody wants to be a part of and the type of game that players live for."
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