Silverman: Frank Wren another voice in boss’ ear

Photo by: The Associated PressNo dissent is allowed on the following: It’s a very encouraging development to realize Dave Dombrowski doesn’t want to surround himself with “yes” men.

As the new Red Sox president of baseball operations made clear in announcing the hiring of longtime associate Frank Wren yesterday as his highest ranking talent evaluator, Wren was not brought in to the Red Sox’ fold in order to play Ed McMahon to Dombrowski’s Johnny Carson.

(Kids, McMahon was the chuckling sycophant sidekick to Carson, who used to do what Jimmy Fallon does now on “The Tonight Show.”)

No, Wren is here because Dombrowski wants to hear what Wren and others in the expanding baseball operations unit…