Manchester United interim boss Ralf Rangnick believes there is no rocket science involved in improving as a club.
The German was asked about United's ability to catch up to the level set by Liverpool domestically and in Europe.
United take on Liverpool at Anfield in the Premier League on Tuesday, fighting for a top four spot while their rivals attempt to win the league ahead of Manchester City.
Rangnick responded to the question with the following: "I think I answered that question earlier on in the last two or three weeks.
"I don't think that a club like Manchester United can afford to take three or four years in order to achieve that, and I don't think it is necessary. We spoke about Liverpool earlier on, how long it took for them.
"After two or three transfer windows if you know what you're looking for I mean if you don't know what you're looking for you'll always looking for the needle in the haystack.
"If you know what kind of football you want to play, what kind of profiles you have for each individual position it's about finding them, but not only finding them but also convincing them to come.
"As I said Liverpool at the time they finished eighth I think the year after they didn't play international football at all, so the full focus of Jurgen [Klopp] was on the Premier League and the national cup competitions.
"I think then it took, I don't know, two transfer windows but even in the other transfer windows that came later on, they just made lots of very, very good transfers and signings, and this is what it's all about.
"It's not that complicated, it's not rocket science, but in order to have your best possible wind, you need to know where your destination haven is. If you don't know that, it's always difficult."
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