The 25-year-old Sanchez won the Copa Libertadores in 2009 and joins the Crew from Argentine side Estudiantes de La Plata.
Sanchez joins Columbus from Estudiantes de La Plata in his native country, where he was part of teams that won the 2009 Copa Libertadores and 2010-11 Argentine Apertura championships. He joins Brazilian defender Glauber and Uruguayan-American left back/midfielder Agustin Viana as offseason signings to come from the south.
“Matias is a technically gifted player with valuable international experience at the highest levels of the game,” Crew technical director Brian Bliss said in a team release. “Our roster has been coming together in recent weeks, and Matias is another young and talented player that gives us versatility in midfield.”
Sanchez was an Argentine Under-20 player and came through the Racing Club ranks before moving to Estudiantes in 2008. He is the second Argentine on the Crew's roster, joining reigning MLS Newcomer of the Year Federico Higuain.