The 20-year-old Spaniard joins the team as a discovery signing after spending six years at FC Barcelona, rising through the club's famed La Masia academy and most recently playing professionally for Barcelona B in Spain's second division.
Rosell will fulfill an international roster spot and has been added to the team's roster. Per club policy, additional terms of the agreement will not be disclosed.
"Oriol comes from arguably the best soccer school and environment a player can be a part of in Barcelona," said Sporting Kansas City Manager Peter Vermes, who played in the Spanish second division for UE Figueres (1991-1995) with current FC Barcelona Manager Tito Vilanova. "Adding him as another midfielder will help raise the bar on a daily basis within our roster and add a lot depth in the middle for us."
"I'm very happy to be here and I'm eager to start working with the team," Rosell said. "With my hard work, I hope to help the club achieve the objectives that we are focused on. I am very impressed by the support and I want to make the fans happy with my game."