West Ham hope to complete the £50.8million signing of Lyon midfielder Lucas Paqueta following his medical on Sunday.
The Brazilian, who will sign a five year contract, was due to fly into London on Saturday evening after West Ham agreed a fee of £36.4m plus a further £14.4m in bonuses.
The news comes after weeks of speculation regarding the former AC Milan midfielder's future, with West Ham having multiple lower bids rejected before the agreement was reached.
The news will come as a coup to Hammers fans, with Paqueta having won 33 caps for his native Brazil and looks set to feature for Tite's squad in the 2022 World Cup in Qatar.