Watford striker Cucho Hernandez has signed for US Major League Soccer side Columbus Crew for a club record fee.
He played 25 Premier League games last season, scoring five goals, as Watford were relegated to the Championship.
Watford head of recruitment Cristiano Giaretta said new head coach Rob Edwards wanted more homegrown players to "ensure togetherness".
"In the EFL, you can name no more than 11 non-homegrown players on your matchday team sheet, so this is an important part of our thinking when it comes to player trading during this summer window," said Giaretta.
"Rob was clear he wanted a different type of player who will occupy this non-homegrown place in the forward line.