PITTSBURGH — The Pittsburgh Pirates have one of the better second baseman in Brandon Lowe, but his future with the ballclub is unknown past this season. Lowe is in the final year of a six-year, $24 million contract extension he signed with the Tampa Bay Rays on March 20, 2019, which also included two club options, of which he is on the second one, for $11.5 million. It's a pivotal year for Lowe, who is having a great season with the Pirates and also looking for what would be his last real big contract, as he turns 32 years old in July. The Pirates have a big decision to make this offseason on how they approach Lowe in terms of contract negotiations and what they see his value as. Projecting a Contract for Brandon Lowe The Pirates could give Lowe a qualifying offer, which is just a one-year deal at a predetermined rate ($22.025 million for 2026) of the mean of the top 125 highest-paid players.…