By Thomas Neumann Key Los Angeles contributor could miss several weeks of training camp or face prospect of surgery. View the original article to see embedded media. The Rams hope to gain clarity on the injury situation of wide receiver Van Jefferson on Monday. Jefferson, who emerged as a key contributor for Los Angeles in 2021, underwent knee surgery during the offseason. The third-year pro is slated to see a knee specialist Monday to determine whether he needs another surgical procedure, according to NFL Network’s Ian Rapoport. It’s uncertain whether the same injury is bothering Jefferson or…