Columbus Crew SC completed the signing of defender Milton Valenzuela as a young designated player on Friday.
Valenzuela, 19, comes to MLS on an initial loan from Argentine club Newell's Old Boys, and the club will have the option to buy him permanently at the end of the season.
The left-back joined Newell's Old Boys' academy at 14 and earned a spot on the first team in July 2016. He started seven league games for the club this season.
Valenzuel has played 10 times for Argentina's under-20 team, including...