The San Francisco 49ers added eight undrafted free agents with legitimate chances to compete for either the 53-man roster or the practice squad. How do they rank in order of their chances of making the roster? 8. Wesley Grimes, WR, NC State Grimes is big and fast, but that only goes so far in the NFL. A year on the practice squad developing would be best for him.  7. Will Pauling, WR, Notre Dame Pauling projects as a player who would be a small gadget player who might be best in the return game. He is insurance for Jacob Cowing.  6. James Thompson, DL, Illinois  Thompson is one of the highest-rated UDFA additions, but he will enter camp competing with Evan Anderson and Sebastian Valdez for a last roster spot. Beyond that, he may not be the best defensive lineman they add in this UDFA class.  Kirby Lee-Imagn Images 5. Bryson Eason, DL, Tennessee  Eason is in the same spot as Thompson, but may be a small step ahead on the depth chart.…