By Alek Arend The Los Angeles Rams have their sights set on winning back-to-back Super Bowls. To accomplish such a lofty goal, veteran quarterback Matthew Stafford needs to stay healthy. Unfortunately, he’s not 100 percent in training camp. Earlier this week, head coach Sean McVay announced Stafford will not participate in team drills for now. It led some to speculate if the veteran is dealing with an undisclosed injury. This Thursday morning, NFL insider Ian Rapoport painted a clear picture as to what’s going on in Los Angeles. Per his report, Stafford is dealing with “bad tendinitis” in his …