DiAndre Campbell, Dylan Thompson, Colin Kelly doing work

Plenty of big names on the San Francisco 49ers have been spotted working out around the country. However, the under-the-radar members of the roster are also keeping busy. Wide receiver DiAndre Campbell posted some video to Instagram earlier this week following a workout with quarterback Dylan Thompson and offensive lineman Colin Kelly.

Thompson's situation is dependent on the 49ers plans with Colin Kaepernick and the draft. If the 49ers trade or release Kaepernick, it opens up a spot....until the team likely drafts a quarterback in April. If Kaepernick stays, he and Gabbert are at the top of the depth chart, and the team still could decide to draft a quarterback. The team also signed Thad…