SANTA CLARA, Calif. -- San Francisco 49ers receiver Mario Manningham is not listed on the team's injury report. Thus, he is likely in line to make his season debut Sunday against Carolina.Mannigham was activated to the 53-man roster this week. He suffered a knee injury last December. On Thursday, San Francisco offensive coordinator Greg Roman was non-committal about the immediate plan for Manningham. Roman said Manningham was "day-to-day.