West Ham United are on the verge of signing Czech international defender Vladimir Coufal from Slavia Prague, with the 28-year-old to undergo a medical with the London club on Thursday, according to Sky Sports.
With Pablo Zabaleta and Jeremy Ngakia both leaving the Hammers at the end of last season, the need for cover in the full-back position is evident.
West Ham manager David Moyes has preferred Ryan Fredericks in the right-back role this season and the wideman has performed well.
But, with the former Fulham defender picking up a hamstring injury in the recent defeat to Wolves, it leaves the Hammers short in the position.
Youngster Ben Johnson impressed at the end of last season and is now set for a run in the West Ham side.
Coufal has an existing link to the Hammers, with midfielder Tomas Soucek a former team-mate at Slavia Prague and currently with the Czech national side.
West Ham fans are hoping a number of new faces will be added to the first-team squad before the deadline on Monday night, with the capture of a new central defender a priority.
The Hammers have been quiet in the transfer window this summer, with the permanent acquisition of Soucek the only piece of major incoming business.