Barcelona and Argentina stalwart Javier Mascherano will be out for up to two weeks after limping out of his club's 4-1 win over Real Sociedad with a hamstring injury.
Source: Mascherano out for up to two weeks (http://www.fifa.com/worldfootball/clubfootball/news/newsid=2180748.html?cid=rssfeed&att=)