This season is lost anyway. They should now try to consolidate, secure the 2nd spot, maybe have a small chance in the cups and focus on improve the team for the coming year
Just as @ judas stated strengthening their team by considering signing in new players to boast their defense line will be much considered even if they end up in the second play on the table it's a big achievement because they never planned on carrying the bundles league trophy in the first place considering the strength of the team presently
If they are only caring about second place and they have no hope for the first place, there is no need to spend money right now during this break. I am sure the roster they have right now is capable of finishing second in the league, no idea if they will win the cup but there is a chance obviously.
So, all I am expecting from them is not buy or sell any players right now, and wait until the season is over, they made a good amount of money from Sancho deal and they could sell Haaland and make a lot of money from that as well. Afterwards, put Moukoko on striker, yes he is young but he deserves a chance given to him, and then fill the rest of the team with a lot of players thanks to 100+ million they will have on their treasury. That's the smartest choice, with that they could end up at least having a slight chance next season since Lewa and some others will be older.