Facing a weak market for receivers, the 49ers plan to hold on to restricted free agent Brandon Lloyd by offering him a first-round tender later this week. If Lloyd, the team's leading receiver last season, signs the offer, he will get a one-year contract worth about $1.6 million. The move allows the 49ers to match any offer given to Lloyd by another team once free agency begins, and more importantly, would require any team that signs Lloyd to hand over a first-round draft pick as compensation. Lloyd's value likely is higher this season because there will be few quality wide receivers on the free-agent market and few available in the draft. At the scouting combine last week, coach Mike Nolan said there was a possibility the 49ers could start the season with virtually the same receiving corps they had last season.