I was with Sir Alex Ferguson for Man Utd's Treble – this is what he said before Solskjaer’s goal

Sir Alex Ferguson told Steve McClaren to take his seat in the 1999 Champions League final as he knew Manchester United would win in injury time.

United's dream of a historic Treble seemed to be slipping away as they trailed Bayern Munich 1-0 in added time. The Red Devils had been struggling in the Nou Camp from the moment Mario Basler gave the Germans the lead in the sixth minute.

In a desperate bid to turn the tide, Ferguson brought on Teddy Sheringham and Ole Gunnar Solskjaer, replacing Jesper Blomqvist and Andy Cole. In the 91st minute, United found the equaliser they craved when Sheringham diverted Ryan Giggs' scuffed effort into the far corner to force extra-time - at least, that's what everyone in Barcelona thought.

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McClaren, who was Ferguson's right-hand man at the time, realised United would be heading into the additional 30 minutes with an overly aggressive team.

He approached Ferguson to strategise how they were going to approach the next 30 minutes. Instead, the legendary Scotsman, who was fixated on the action on the pitch, simply told him to sit back in the dugout, reports the Mirror.

In Amazon Prime's new documentary '99', which delves into United's Treble-winning season, McClaren recalls the atmosphere on the touch-line when Sheringham equalised. The former England manager said: "And I'm thinking, 'brilliant, we've got a minute to go'.

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"I said: 'What you thinking about extra time? You know, we've got Yorkey [Dwight Yorke] on the right, so we get a 4-4-2 again'. He said: 'This game ain't over Steve. Sit down'."

In the crucial moments of that game, United got the ball back and immediately won another corner. David Beckham's cross found Sheringham again, except this time, the forward flicked his header to the back post, where Ole Gunnar Solskjaer was waiting to prod home from close range to win the final.

Fans, staff, and players alike celebrated the dramatic triumph. The victory meant United became the first English team to claim victory in the Premier League, the Champions League, and the FA Cup in the same season.

When asked about what influenced his decisions, Ferguson said: "I'm a gambler. I just always feel that if you're losing 1-0 what's the point?'

"Do something about it. As long as you've got the love [it doesn't matter]. It's a love. When I gambled and I lost, it didn't worry me. I knew we tried our best.

"But when we do win, that dressing room is electric. It was a special team. There's no question about that. Winning a Treble was unbelievable It's a moment in your life where you go: 'Wow, I wish I could do this every week'.

"The reason for being a manager is to send fans home happy. I was nearly crying when I turned into Dean's Gate. I think that day, you say to yourself: 'This is the greatest club in the world'. That's your job, send them home happy."

99 is available exclusively on Prime Video on 17th May when all three parts will drop globally