Jimmy Garoppolo will undergo right shoulder surgery soon and it remains unclear when he will resume throwing.Ian Rapoport reported Tuesday that the surgery is for a torn capsule in his shoulder and the projection is for him to begin throwing again in 16 weeks.Adam Schefter also reported that Garoppolo is expected to begin throwing before July 4.That is not a guarantee, said Dr. David Chao, ProFootballDoc, and the surgery could have a big impact on his trade value this offseason.When the injury happened in mid-January, Chao said it appeared to be a rotator cuff contusion.Now with the news that surgery is required, the extent of the rotator cuff damage is a big factor as to when Garoppolo will return to throw.If it is a partial thickness tear, he could fit that 16-week timeline, Chao said. If it is a full thickness tear, his recovery would likely be longer than that and could bleed into OTAs.Either way, whichever team is interested in trading for the 30-year-old will likely need sufficient surgery info to guarantee he will at least be ready for the preseason.That could tank his value and even force the 49ers to hold on to Garoppolo, who has spent the past five years in San Francisco.The narrative around the league has been that the 49ers are clearing the way for 21-year-old Trey Lance to assume control of the team, but that has become infinitely more complicated with Garoppolo's shoulder surgery.