It was easy for Pep because he is managing Manchester City which literally would grant him all the player he needs. As for Liverpool's situation, some of their players might be leaving at the end of the season though so its going to be tough for whoever that will succeed. Saudi League is going to poach top players over 31+ of age so that means Salah and Van Djik could potentially leave if they get a decent offer though
EPL is rough but the best results comes with exciting news. Pep Guardiola is not done with Manchester City, he will continue to build and raised the importance of the club to top levels. Liverpool key players will be pushing for exits door at the end of the season because Jurgen Klopp keen on leaving, we know how frustrated and upset the team and the fans are because they were hoping to see the coach and the players in coordination and also Klopp managing for long term and this suddenly happens, the news hits harder on different level.