I think Liverpool will spend around £150m net this summer. Which they should because in the last two years they spent -8m. Keita and Fabinho is £87m. It could be more though because they got £70m from this CL run and are already qualified to next year's group stage. Plus there's tons of new revenue from the new main stand and the owners loaned the club the money to pay for that, at basically no interest. They also signed a bunch of new kit deals including maker and sponsor.
Lallana and Ings should be departures equaling around 20-25m. I know there's no news about Lallana leaving but I think he should as he's a really good player who deserves to play every week. Mignolet and Sturridge are definitely leaving too. Don't know what they're doing with Clyne either, but Klopp pointed out that Fabinho can play fullback if they really need him to, so I think Clyne is leaving. That's a lot of big wages gone.
If they had Keita and Fabinho on Saturday, one can only wonder. That team is going to be fantastic though if they sign the other targets. Only relative weaknesses would be Lovren and Alexander-Arnold (who gets better all the time). Another thing I like is that the squad is young enough that they can really go for it now and not have to worry about signing players in upcoming seasons. Maybe a CB to replace Lovren, a backup midfielder and that's it if everything goes well.