A person familiar with the deal says free-agent outfielder B.J. Upton and the Atlanta Braves have agreed to a five-year contract worth $75.25 million, the largest free-agent contract in franchise history. The person says the deal is expected to be announced today once Upton passes his physical. The 28-year-old Upton hit .246 with 28 homers, 78 RBIs and 31 stolen bases for Tampa Bay last season. He will replace free agent Michael Bourn as the Braves’ center fielder and provide a needed right-handed power bat for the lineup. Upton’s home run totals have increased in three straight seasons, but he has hit below .250 with more than 150 strikeouts in each of his last four seasons.