The Manchester United interim manager says up to 10 new players are needed for the rebuild.
It is extremely embarrassing for me as a coach to have press conferences like this one, as he addressed the media after the game.
It is embarrassing, it is disappointing, and it is even humiliating.
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The club and the city were lifted to a new level by the change in leadership after the arrival of Juergen Klopp. We need that in the next transfer windows.
The German, who is to take a two-year advisory role come the end of the season, warned big changes are afoot at Old United ahead of the expected arrival of new boss.
There will be a rebuild, but that doesn't help us when we still have five games to play.
It is not difficult to analyse a situation. There will be at least six, seven, eight, maybe ten new players. You need to be aware of how you want to play before you sign those players.
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Roy said that the lack of passion from United came as no surprise with three of the matchday squad out of contract at the end of the season and others expected to leave.
The squad was aware of the importance of the rivalry with the Reds and focused on getting points in the race for the top four.
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The German says that United are not good enough to get points against the Reds, as they finish the season with a cumulative 9-0 defeat against their fiercest rivals.
They have 25 Formula One racing cars in their squad.
It makes no sense to speculate about our chances of making the top four after a performance like today.
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It will not last forever, as he revelled in another outstanding performance by his title-chasers, as he said that he can enjoy their dominance over Manchester United.
With injuries to Fred and Scott McTominay, and a problem for Paul Pogba early in the first half, it was easy for the Reds to take full advantage of United's problems in the middle of the park.
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The Reds moved to the top of the league with two games in hand on Manchester City, and were praised by their manager for their work ethic.
I'm not here to humiliate opponents. He said that they did what they had to do.
When you are in a difficult situation like United before the game, Paul has to go off and it is not easy to play against us.
Nine-nil? I am not interested in that. If the supporters want to celebrate, it's something for them. I know it won't last forever, they will strike back.
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Both sets of supporters applauded in tribute to the family of one of the baby twins who died on Monday.
There is a pure class in the moment where everyone knows what is important in life. That was my moment of the game.
Luis set up Sadio, Diogo came on, and Thiago played a good game.
We don't take these things for granted. If our counter-pressing wasn't as good, United could have had a better game.
The next assignment for the Reds is in the premier league, where they will face off against their arch rivals at 4.30pm on Sky Sports.
Next up for Manchester United is a trip to the north London stadium to face their rivals.