The 49ers have their starting left tackle back in the lineup, but they will be without one of their first-round draft picks for Sunday’s game against the Giants. Defensive lineman Solomon Thomas is inactive for the second game in a row. Thomas hurt his MCL against the Eagles two weeks ago and was listed as questionable on Friday’s injury report. Left tackle Joe Staley is back after fracturing his orbital bone in the same game. He and right tackle Trent Brown have not both been in the lineup since Week Seven, but are both playing this week.