Jennings has been selected to the 49ers' practice squad, Matt Maiocco of NBC Sports Bay Area reports.
Jennings had a poor combine (4.72 40-yard dash) but turned in a strong camp by drawing praise for his polished route running for his 6-foot-3 frame. The 49ers have a young receiving corps that is already dealing with injuries, so the seventh-round draft pick may find himself getting the call at some point this season.