Bottom-of-the-table West Ham insist no announcement will be made about the future of under-pressure manager Avram Grant on Saturday.
BBC Sport understands Martin O'Neill is being lined up to replace the Israeli, who took charge of West Ham for the visit of Arsenal at Upton Park.
The Gunners went on to inflict a 3-0 defeat on the home side in that match.
It was only West Ham's second loss in eight games but Grant looked disconsolate as he left the pitch.
The 55-year-old Israeli applauded fans as he departed and threw his claret and blue scarf into the crowd before heading down the tunnel at Upton Park.
O'Neill, 58, quit Aston Villa out of the blue on the eve of this season.
"O'Neill and West Ham have been in talks over the last week and it seems he will be the new manager," said BBC sports news correspondent Dan Roan.
"There was a board meeting on Wednesday after which club owners David Sullivan and David Gold refused to publicly back their man and it seems a decision has been taken and this will be Grant's last match in charge."
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.