PARIS : French league leaders Paris Saint Germain will be without star Argentinian striker Javier Pastore for a month after he tore a left thigh muscle during their 4-0 French Cup victory over Sable-sur-Sarthe on Friday, a club source said Saturday. The 22-year-old - who has scored seven league goals since his 42million euro transfer from Palermo last summer - had to go off in the 27th minute of the match.