The 49ers are securing the No. 3 overall pick from the Dolphins, while Miami nets the No. 12 overall pick, a third-round pick and two future first-round picks, according to the NFL Network.
The Dolphins, meanwhile, have now traded the pick at No. 12 to the Philadelphia Eagles to move up to the No. 6 spot in the draft.
The No. 4 overall pick in the draft -- held by the Atlanta Falcons -- now becomes a prime position for teams looking for a quarterback.
For Detroit, it likely means that trading down just became that much more difficult.
Teams that will want a quarterback will look to trade with Atlanta, Cincinnati or Miami -- the three teams just ahead of Detroit in the draft order.
While the front office has publicly stated that it is still in the market for a quarterback, it is not truly believed that Detroit would invest in a quarterback with a pick that high in the draft, especially since the organization decided to restructure the contract of Jared Goff.
Recommended Lions Articles
Detroit Lions' Offense Beginning to Raise Red Flags
Through the first week of training camp, the Detroit Lions offense has been underwhelming.
Detroit Lions Release OLB Reggie Gilbert
Detroit Lions announce a roster move the second week of NFL training camp.
Jermar Jefferson Explains Improvements Made Since OTAs
Detroit Lions rookie running back explains why he sees value in playing special teams and what he did after OTAs to improve his game and his speed.
It is also likely that linebacker Micah Parsons or one of the talented wideouts will be available for Detroit to select with the No. 7 overall pick.
More from SI All Lions: