Slavia Prague defender Vladimir Coufal has signed for West Ham for £5m on a three-year contract having successfully completed his medical.
The right-back has won the Czech title twice with Slavia and has played eight times for the Czech Republic, including in their 2-1 win over England in European Championship Qualifying last October.
His deal at the London Stadium, where he will meet up with fellow Czech international and former Slavia team-mate Tomas Soucek, also has the option for a further two years.
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Coufal will battle Ben Johnson and Ryan Fredericks - currently out with a hamstring injury - for the right-back berth at the London Stadium.
"I'm very happy I am part of the West Ham family," said Coufal, who will wear the No 5 shirt. "I know about the interest West Ham had in me for a long time but now finally I am here and I am so happy."
Transfer Deadline Day - October 5
The summer transfer window closes at 11pm on Monday October 5 with a feast of activity throughout the day involving the biggest names in football.
Some of the highlights to enjoy on Sky Sports News and across our Sky Sports platforms:
- Breakfast with David Ginola and Rachel Yankey
- The Football Show Special with Dwight Yorke and Andy Cole
- Countdown with Harry and Jamie Redknapp
- Supporters at the heart of the show with Sky VIP fan wall
You can also follow the stories on Sky Sports' digital platforms, with our dedicated Transfer Centre blog.
Here's all you need to know about Deadline Day and how to keep across all the deals and drama with Sky Sports.