if all goes well for Liverpool I think they can finish in the Champions League Zone next season.
I think they will do better than just merely qualify for the CL, i think Liverpool is going to be back in the picture to compete with Manchester City for the EPL title, Klopp has ample time to study his team and recruit the players he needs, and that is what they are doing already. Liverpool are not playing the in CL next season, thus they can fully concentrate on the EPL and give City a good fight. Next EPL season will be so interesting, City are going for their fourth consecutive EPL title, and all the teams will be out to stop them, it'd be so competitive.
Returning to competition is a must for Liverpool to become title contenders next season, even if talking about the Champion League place next season I think Jurgen Klopp for now can secure it after they bring in several players who are needed and it is clear that this will be more competitive in the Premier League with other teams that can currently be said to be the same in performance.
Klopp will definitely evaluate everything and after the League starts Klopp already knows what the team needs, even though Liverpool don't play in the Champion League but they play in the Europa League it is an important competition too not only concentrating on the Premier League but in the Europa League they will pursue.
About the title, other teams will not let Manchester City win again, other teams will want to win the title, but I admit that Manchester City remains a strong challenger.