Derby County have signed Middlesbrough midfielder Julien de Sart on loan for the rest of the season.
The Belgium Under-21 international defensive midfielder joined Boro from Standard Liege in February 2016, for an undisclosed fee of about £2m.
De Sart, 22, has made three appearances for the Riverside club, with his only start coming in the League Cup against Fulham in August 2016.
"He is a talented player with plenty of potential," said boss Steve McClaren.
De Sart is eligible for the FA Cup third-round tie at West Brom on Saturday.
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