Eh, I would've kept the 85mm as it was and used that lens as AF – I think it's a strong portrait shooter, very sharp and good tonalities at f/4.
Keep the 90mm R lens on a Leica R body, or assemble it with the Leitax adapter and use it in manual focus with a D700, D3, or any F body.
Nikon F4s, Nikon F100, Nikon D800
50mm f/1.2 AIS, 35mm f/1.4 AIS, 300mm f/4.5 AIS, 20-35mm f/2.8 AF-D, 80-200mm f/2.8 AF-D, 85mm f/1.8 AF-D
Contax G1, Carl Zeiss 45mm f/2 Planar T*
Voigtlander Bessa L
Mamiya RZ67 Pro II, 180mm f/4.5