Whatever we do, I hope we spend big on a couple of world class starters rather than spreading the money around on 6 guys who are no better than what we have now.
I don't view depth as our biggest problem. If we assume Dave returns to something resembling past form, we've already got 13-15 quality, Premier League starter-quality players (setting GK aside). We have probably 6 across the back line, 5 in the midfield and 4 at forward. At the moment, the problem is that none of them are among the best in the league at their positions, except for Kante. As I look at what we have in-house, money spent in the midfield would be wasted - unless Kante leaves. Kante is the best there is, RLC and Mount may well grow into studs and Jorginho, Kovacic and even Barkley excellent depth players. That leaves forward and the back 4.
I'll be interested to see what James can bring after he's healthy. If it's positive, center back looks to be the biggest place for a major upgrade (and we could even recoup some of that money by sending 1 or 2 of the existing, capable CBs out). If James does not look like an immediate replacement for Dave, maybe that spot is where you spend the money. One place we likely will need a depth player is behind Emerson. Can't see Alonso sticking around for no play.
Up front, it all depends on Tammy. If he's a 15+ goal guy, we can spend the money on a winger. A world class wing to go with CP and CHO and a 15+ goal striker makes for an excellent offense (and set for the future as the three young forwards continue to develop). If Tammy isn't that guy, the money needs to go a world class, sure thing 20 goal striker. In that case, Mount and RLC and formations can be used to supplement CHO and Pulisic.
Small dollar amounts on depth at left back and maybe wing. Contend for titles.