This is oversimplifying, but I see 3 conceivable options here, depending on budget and then how much we spend elsewhere:
New owner, insane budget:
1) Kane
2) Martial stays as backup
3) Sign a teenager, good chance it's from South America, to learn on the job or maybe go on loan for a year in Europe
75-100M budget
1) Ramos, Kane or Osimhen
2) Martial or Weghorst stays, the other goes, depending on Ten Hag's view of Martial health
60M budget
1 - Sign someone in their early prime for 40M like Muani or David to be the #1
2 - Sell Martial or let Weghorst go, depending on Ten Hag's view of Martial health
3 - Sign a teenager, good chance it's from South America, to learn on the job or maybe go on loan for a year in Europe
40M budget
1 - Sign someone in their early prime for 40M like Muani or David to be the #1
2 - Sell Weghorst and keep Martial since we have a clear #1 now and can risk Martial's fitness less by playing him less and getting better production than we get out of Weghorst for now