Watford have signed Nigeria defender William Troost-Ekong from Italian club Udinese on a five-year contract.
The 27-year-old centre-back was born in the Netherlands, where he began his career with Groningen.
He joined Udinese in 2018 and his move to Watford is the latest in a series of summer deals between the two clubs, which are owned by the Pozzo family.
"I believe in the project for Watford to get back into the Premier League," the 27-year-old told BBC Sport Africa.
"It's always been my dream to play in the Premier League and Watford has given me the platform now to get there.