Think that's unavoidable unless they intend on keeping ETH, which I'm not convinced even the Glazers would have done right now. £10m for Ashworth, £6.25m for ETH, £4m for RDZ...£20m should be easily affordable to us to get the manager and director we want. If we're genuinely stuck for money then the problem is way worse than any of us imagine.
As somebody else pointed out, ETH has shown he's not really going anywhere with what we've got. If we're stuck for money and can't sign him an amazing team, then it's a lost cause anyway. So it surely makes sense to sign a manager that can get more out of what we have, plus a couple of additions. Tuchel is apparently convinced we have good players that he can work with.