League One club Sunderland have signed full-back Niall Huggins on a permanent deal from Leeds United.
The 20-year-old came through the Premier League side's academy and made one first-team appearance for the Whites, against Arsenal in February.
Huggins, a Wales Under-21 international, has agreed a four-year contract with the Black Cats.
"He's a bright kid and he's had a very good education at Leeds," head coach Lee Johnson told the club website.
"Now it's the right time for him to step into that first-team environment."
BBC Radio Leeds reports that Huggins, who can also play in midfield, has joined the Wearsiders on a free transfer, but a sell-on fee is included in the deal taking him to Sunderland.