Actually is natural with manager decision want to leaves or reach mutual contract although he was been success make team winning many tittles, its not first time because Zidane as Real Madrid manager leaves his position after winning treble Champion League trophies and right now still focus retired from manager position.
What I will say is Liverpool should have saw this coming because the last contract extension that Juergen Klopp signed it took a lot of persuasion from the Liverpool to get him to sign the contract, he wanted to leave straight away then but Liverpool were able convince him, something Klopp admitted didn’t sit well with his wife then. I knew afterwards that sooner or later he will leave, and here we are. It is not always we see things like this but it is what it is and Klopp has paid his full due regardless of where they finish this season. I just hope it’s not something too related to his health because the likes Fergie and Roy Hodgson of Crystal Palace did it.
As for a new manger there are handful of people they can sign, the top on the list is definitely Xabi Alonso who since his interception as Bayern Leverkusen manager has been raising bars, getting him wouldn’t that much of a big issue for Liverpool because his contract with Bayer Leverkusen actually has a clause that allows him to leave the club should any of the Real Madrid or Liverpool clubs coming asking for his signature. Right now Madrid has actually extended Ancelloti’s contract which leaves the door open for Liverpool except if Bayern Munich actually fires Tuchel and they coming knocking.
Other wild cards are Mourinho, Zidane. Brighton’s DeZerbi and their own club legend Steven Gerrard who has declared his admiration to one day become their manager. The last though he was in EPL it didn’t end well and that will be the only stumbling block for him now. During his Rangers days as manager he was actually on Liverpool’s radar to come in for Klopp, i don’t know maybe they still consider that now.