There's a report
in the Vancouver Sun that the St Paul's site is on the market. If you dig back on the new St Paul's thread you'll see they were hoping to get $500m from the existing site. It's now assessed at $784m.
This is the detail that will affect what get's built instead of the hospital "The brochure says the property has an FSR (floor-space ratio) of 6.6, which means in theory you could build 1,928,751 sq. ft. on the site. But a city spokesperson said various factors may limit the square footage to 1.4 million.
“Based on some very preliminary analysis and taking into account view corridors, shadow analysis of nearby parks, on-site open space, heritage retention, tower form and separation, and transportation requirements, it is anticipated that the density achievable on the site under the existing zoning could be in a range of roughly 1.4-million sq. ft. gross floor area,” said a city spokesperson in an email."