The 49ers have signed a second player from their 2020 draft class.
Jennings was one of two wide receivers picked by the 49ers in April. He had 59 receptions for 969 yards and eight touchdowns during his final season at Tennessee and left school with the fourth-most receiving yards in school history.
Jennings and first-round pick Brandon Aiyuk will vie for playing time in a group that may be without Deebo Samuel to start the season. Samuel broke his foot earlier this month and is expected to be out of action into August at least.