The 2016 Butkus Award winner underwent right shoulder surgery and will be limited during OTAs, although Foster said he expects to be cleared in time for training camp.
49ers add CB Witherspoon, QB Beathard on second day of draft →
"They gave me a chance," Foster said. "I really appreciate the 49ers. I'm ready to go hard and work hard and prove I'm worthy of the spot. They're not going to regret it."
49ers get Solomon Thomas, extra picks in 1st round of draft →