Liverpool agreed to sell Quansah for 35 Million Euros to Leverkusen, I don't know if this is a lose for Liverpool or not. His value is actually fair for 35 Million Euros because his performance isn't that good even he had been played for 2 years in Liverpool.
But, Quansah might able to improve and upgrade his level because he' still young.
35 million Euros for Quansah is a fair price in my opinion unlike some other clubs which would have tagged an amount not lesser than 50 million to sign him but Liverpool have been considerate and fair with their price. Leverkusen seems like a good choice for him in terms of development and getting playing time.
Liverpool did the right thing to sell Quansah at that price because they have a mutual understanding with Leverkusen. I believe that Quansah will be happy playing in Leverkusen and his contributions will be felt in Leverkusen. He will have enough time to play and improve himself. Hope Ten Hag will know how to use these players.