BYRNE Brothers is waiting to sign a £30 million contract with Sir Robert McAlpine for concrete works on Arsenal Football Club's new stadium.
Bids from O'Rourke and PC Harrington were relegated at Christmas, leaving Byrne as the only firm in contention.
It has been in exclusive talks with McAlpine since then to try to finalise details of the contract.
It is understood the signing of the deal is being held up because of problems moving tenants who occupy the proposed stadium site. Project manager AYH is trying to resolve this situation.
To keep the project on target Byrne Brothers has started some basic work but it is expected the firm will start the main concrete works in April.
The contract will take some 15 months to complete. The 60,000-seat stadium is due to open in 2005.