Sir Ian Wood could invest up to £50m in the project
Plans to create a "new heart" of Aberdeen city centre could be "technically and financially viable", an interim report has suggested.
Businessman Sir Ian Wood has offered up £50m towards the cost of the development, if that sum was matched with public funding.
The study about Union Terrace Gardens was carried out by consultants Halliday Fraser Munro.
It said a planned contemporary arts centre could also be incorporated.
Sir Ian is chairman of the multi-million pound energy services firm, John Wood Group.