Ben turns 35 in a few days.
Although he had an .809 OPS last year, his OPS had been in decline for the two prior years. Also, he had his lowest PA number since 2009 last year.
I'm not trying to say Holt is as good as Zobrist, but if you look at their ages, versatility versus and comparative contractual costs, I think one can see that some teams would greatly value Holt.
Why is Holt more valuable to other teams than us?
Several reasons:
1) We have Rutledge, Hernandez and Marrero behind 5 vets at the 4 infield positions.
2) We have Betts, JBJ, Young, Castillo and soon to be Benintendi and possibly Moncada to play OF or IF in Moncada's case. Not many other teams have positional depth like we do.
3) The step "down" from Holt to Rutledge/Young is mush less than the step down between Holt and some of the clowns starting for other teams, for example, he'd be the 4th best hitter on the Astros... easily.
4) His contractual cost is a big plus to many contending teams, while the Sox can afford to pay someone more than what he makes to be on the 25 man roster, if need be.