There are probably three ways this could go imo.
1. The club want to get rid of Hojlund because they are upgrading to a better #9 and need to raise money by selling Hojlund (however little that might be).
2. The club buy a new #9 but sell any combination of Rashford, Sancho, or Antony to raise funds, and make a bet that last year's Hojlund was an anomaly that can be corrected without the pressure of being a starter.
3. We buy a new #9 and still replace Hojlund, less for the money but more because we've identified a new promising backup striker elsewhere.