Amid contract talks with the San Francisco 49ers, wide receiver Jauan Jennings had a wrench thrown in his plans of proving his worth during training camp.

As San Francisco 49ers wideout Jauan Jennings enters the final year of his contract, he's hoping for a new deal before the season begins. There have also been talks about a trade of Jennings. On Sunday,

Wide receiver Jauan Jennings left Sunday's practice early because of a calf issue. It's the second time this offseason he's dealt with a calf problem. Jennings also had a calf ailment in OTAs according to the San Francisco Chronicle's Eric Branch.