BOSTON (CBS) – It’s looking like the injury-plagued Boston Celtics will be without guard Leandro Barbosa for the rest of the season.

Barbosa suffered a non-contact knee injury in the third quarter of Monday night’s loss to the Charlotte Bobcats and had to be carried off the court by trainer Ed Lacerte and center Fab Melo.

“It’s not looking great,” head coach Doc Rivers said after Monday night’s loss — which snapped a seven-game win streak for Boston. “But we’ll see.”

“We’re falling like flies right now,” said Kevin Garnett, according to CSNNE’s A. Sherrod Blakely. “It’s tough. It’s just tough all the way around. You messing around with these guys and then all of a sudden you see a season-ender, season-ending injuries … it’s tough, man. We’re grinding right now.”

According to several reports Barbosa is likely done for the rest of the season, though he will undergo an MRI in Boston on Tuesday to determine the severity of the injury.

Barbosa was fitting in nicely since point guard Rajon Rondo went down for the season with an ACL injury. In eight games since Rondo’s injury, Barbosa averaged eight points over 21 minutes per game, providing Boston with a nice spark off the bench.

For the season, Barbosa averaged 5.2 points on 43-percent shooting in 12.5 minutes per game.

The injury bug has hit Boston hard in 2013. Should Barbosa be done for the year, he’ll be the third Celtic to suffer a season-ending injury over the last month. Shortly after Rondo was lost for the season, rookie Jared Sullinger underwent season-ending back surgery.