By Alek Arend Why trade Jimmy Garoppolo now when you could probably get a first-round pick for the veteran quarterback if you wait until training camp to make a deal? That’s the potential scenario the 49ers‘ front office is probably considering right now. It’s no secret the Niners will trade Garoppolo and hand the reins over to Trey Lance. However, the team has been quiet on a Jimmy G trade. The rest of the NFL, meanwhile, is making all sorts of trade or free-agency noise, especially at the quarterback position. So what’s the holdup? Per The Athletic, the 49ers could fetch a first-round pick f…