The 49ers will monitor Christian McCaffrey's usage this season in an effort to preserve him long-term.
Lamb and Aiyuk are seeking to join the party in the wake of multiple lucrative contracts that have reset the NFL's wide receiver market.
The quarterback, entering his fifth year in Miami, told reporters at Dolphins minicamp on Tuesday that he was "not frustrated" by lengthy contract negotiations, but admitted that he was a bit impatient.
Kyle Shanahan reacted to Brandon Aiyuk's notable absence from the 49ers' first day of mandatory minicamp on Tuesday.