49ers wide receiver Jon Baldwin has restructured the final year of his current contract, according to a league source.The 24-year-old had his base salary reduced from $1.4 million to $645,000, though he can earn the difference of $755,000 back in the form of incentives.Baldwin's deal includes incentives tied to receiving yards, receptions and offensive playing time.If Baldwin surpasses 65 receptions next season, he will earn $255,000. If he surpasses 800 receiving yards, he will earn $250,000.