West Ham expect to complete the signing of striker Simone Zaza from Juventus later on Friday.
Manager Slaven Bilic told a news conference ahead of the weekend's game at Manchester City that Italy international Zaza had agreed personal terms.
"With the Zaza situation, it looks very likely to happen and should happen today," he said.
"As far as I know the deal is agreed between clubs. The personal terms are also agreed and he is due in London today, so we hope it will be done.
"It's very positive and it's a boost. We've been trying for a long time now to get a top-quality striker, and he was always mentioned.