Kendrick Bourne, 24
Bourne is a restricted free agent this offseason, but his reliability in three NFL seasons makes him an essential piece of the 49ers’ receiving corps moving forward. The numbers are never going to be huge for the former undrafted free agent, but he’s a fearless pass catcher who turned into a go-to target for Jimmy Garoppolo in the red zone and on third downs. The skill set isn’t there for Bourne to be a No. 1 or 2 receiver, but he’s a perfect third or fourth option in a good passing offense.