Simons Developments confirmed that it parted company with Resolution Properties in early December over the terms of funding lined up for Adjaye's new Market Hall in Wakefield.
Simons cited irreconcilable differences with Resolution over the terms of the latter's funding package for the high-profile project.
The scheme was originally supposed to start on site in spring 2006, according to information released in July by Wakefield's District Development Agency, First.
But a spokesman for the developer said work on the 5,000 sq m project would now not start until early 2007.
Adjaye Associates was selected for the project, part of a wider regeneration designed by local practice DLA Architecture, in the middle of last year.
The Simons spokesman said it was in talks with replacement funding partners and it was hoped the Adjaye project would be seen by planners in mid-February.
'We parted amicably with Resolution when we told them we finally had to let them go,' he said.