Mane, salah and firmino have become the best trio a few years ago but so many things happened in the past and it was making mane left from liverpool to the bayern. I heard that if mane is insteresting to go back again to the liverpool.
Liverpool's management has been adding mcallister and more to come. Klopp is aware if his team needs to make a lot of improvements as a part of preparation for upcoming season.
I hope that liverpool will be also sign a good striker.
Mane had many difficulties with Bayern Munich and was fined by them at some point, he failed to play as he used to do with Liverpool but I doubt they will accept him after his departure.
Liverpool still have to reinforce their lines including the attack line so they can get back to top spots again!