How much is too much when it comes to signing slugger Kyle Schwarber ? That’s what the Boston Red Sox and other clubs have to decide in the offseason about the Philadelphia Phillies star.

Schwarber leads the National League with 53 home runs and tops the majors with 128 RBIs , making him a legitimate MVP candidate despite spending most of his time in the lineup as a designated hitter.

If that sounds familiar, well, it should. MLB insiders who are trying to predict Schwarber’s next contract are using former Red Sox All-Star J.D. Martinez as a comparison.

“Finding a good comp for a 33-year-old DH coming off of his best season is a difficult task,” MLB.com’s Mark Feinsand reported . “Most DH-only players don’t land big multi-year contracts in the first place; they typically b

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