Liverpool is not a team with a bad financial situation and they are a team that can hire the players they need and I'm sure Klopp will give the list of players to the team to make a stronger team I was thinking they are going rebuild their teams for the next season.
However, I saw some news on Germany that they beg Klopp to leave Liverpool and help their national team.
https://www.thesun.co.uk/sport/22762750/germany-jurgen-klopp-quit-liverpool-hansi-flick/ I agree with you, presently Liverpool team is not one that struggles financially; instead i think they struggle because of change in style of play since salah left. And yes, the window is open and i am sure theres so much to explore in the market as Liverpool looks to keep Klopp and make midfield signings.
Also, Klopp is not off to manage the German national team. Not at all