While Vernon Davis has been out front publicly with his thoughts about his contract, Alex Boone has been not.But make no mistake: Boone is steadfast in his stance. He is not reporting to the 49ers Tuesday in time for the mandatory minicamp without a new contract, according to a source close to the situation. The odds of a contract happening in the next day are near impossible.Thus, Boone is poised to become a holdout. The 49ers can start fining Boone once he starts missing mandatory sessions.