West Ham United's Emirates FA Cup fourth round tie against West Bromwich Albion will be played on Saturday 25 January, with a 3pm kick-off.
The Hammers welcome Slaven Bilic's Baggies side to London Stadium hoping to secure a place in the competition's last 16.
West Ham saw off Gillingham in their third round tie, as second half goals from Pablo Zabaleta and Pablo Fornals defeated the League One side by a 2-0 scoreline.
West Brom were pitted against fellow Championship side Charlton Athletic in the third round, winning 1-0 at The Valley to book their spot in the fourth round,
Bilic, who enjoyed spells with the Hammers as a player and manager, has led a promotion charge from the Baggies this term, with the West Midlanders currently sitting second in the Championship table, level on points with league leaders Leeds United.
Ticketing information for this fixture will be confirmed in due course.