Wide receiver Randy Moss is unlikely to be re-signed by the San Francisco 49ers this season, according to coach Jim Harbaugh.

The 49ers receiving ranks have been depleted with the news that Michael Crabtree has undergone Achilles tendon surgery, but Harbaugh said that instead of Moss the franchise would look to the young prospects at the club.

"We're excited for the young receivers that we have," NFL.com quotes Harbaugh as saying.

"I really feel that somebody's going to emerge there because they have to. Competition will create that, and we'll look forward to watching it [unfold]."

Moss averaged 15.5 yards per reception last season for the 49ers.