I don't know whether Pogba will stay. If he does leave, Bruno Fernandes could take that spot. Then we would need to sign someone to play alongside McTominay. If Pogba did leave, I would expect us to get a good fee and maybe a player in return. There is also talk that James Maddison is a target (only problem is I can see this transfer costing us a lot).
Liverpool don't really have a very deep squad, Manchester City are the other extreme. Liverpool have been very lucky this season. Everything has gone their way with injuries and the like. It will be a big test to see how they do next season with the African Cup of Nations.
Even the starting XI I named earlier would have Fred, James, Greenwood, Romero, Dalot on the bench. I think those players are all good enough to sit on the bench. We do need a better third centre back than Jones and a few more attacking options to replace the likes of Periera and Lingard. I hope that a mixture of our academy plus us signing unheralded players like James could fill those spots. We don't want to have to spend 50 million pounds for bench players.
I don't think we can beat this season's version of Liverpool. That team is good enough for third place in most seasons. That would stop the crisis and from there we would be in a stronger position. If we could get back to regular top 4, we would have much more power in the transfer market for instance.