Source: Steve Smith out until December

New York Giants wide receiver Steve Smith has a torn pectoral muscle that is expected to sideline him into December, according to a source familiar with the situation.

The source predicted Smith would miss at least "a few more" games, though another person said the receiver might be able to return against Washington the first Sunday in December.

The Giants initially categorized Smith's injury as week to week, but the truth is it is closer to a month-long injury and could turn out to be longer depending on Smith's pain threshold and doctor's evaluations.

The Giants also lost Smith's replacement, Ramses Barden, to a season-ending ankle injury that left him on crutches and in a cast Monday.

Hakeem Nicks, Mario Manningham and rookie Duke Calhoun, who has yet to make an NFL regular-season catch, were the only healthy wide receivers remaining on the roster as of Monday.

But Tuesday the team signed Derek Hagan to a one-year contract for the league minimum, according to a league source. Hagan played for the team last season, primarily on special teams, but was cut in training camp.

Returner Darius Reynaud is also listed as a receiver but he is nursing a hamstring injury. Tight ends Kevin Boss and Travis Beckum may factor more into the passing game now.

Boss, however, suffered a lower back sprain in the game against the Cowboys. He hopes to play Sunday night against Philadelphia.

The Giants recently waived Sinorice Moss from the injured reserve and the team says Moss is not eligible to return. Rookie receiver Victor Cruz was placed on injured reserve earlier this month with a hamstring injury. The Giants, who have wide receiver Samuel Giguere on the practice squad.

Adam Schefter is an ESPN NFL Insider. Information from ESPNNewYork.com's Ohm Youngmisuk and The Associated Press contributed to this report.