Real Sociedad have moved to secure the long-term future of Aritz Elustondo after handing him a four-year contract extension at Anoeta.
The 21-year-old right-back is a product of the club's youth system and was promoted to the first-team squad last season, making his debut against VIllarreal in January 2015.
After featuring in 13 of La Real's 18 La Liga matches this term, Elustondo has been rewarded with a new deal that will keep him in San Sebastian until 2020.
"It's a dream come true, the club has given me everything," he told Real Sociedad TV. "It is the best Christmas present."
Elustondo scored his first goal of the league campaign on Sunday in a 2-2 draw against Rayo Vallecano in Madrid.