The Dutch architect will work with the Londoners on the much-anticipated new headquarters building for investment bank Rothschild.
The 20-storey building, which is yet to go public, has been described as 'three boxes stacked on top of one another' by a source close to the project.
The scheme - called 'New Court' and located on St Swithin's Lane - was also described as 'every bit as outlandish' as Rafael Viñoly's 20 Fenchurch Street redevelopment.
Viñoly's scheme resembles an elongated television screen, and was unveiled exclusively by the AJ earlier this year.
The source added that it would be 'overtly a Rem Koolhaas scheme and will be one of his signature buildings'.
The scheme may be reminiscent of OMA's recently unveiled Museum Plaza redevelopment in Kentucky ( pictured below).
A planning application is due to be submitted early this summer.