I just read a very good article at Amazin Avenue on John Buck he brings power to the position and is highly considered behind the plate to the point that both the Jays and Mets see him as a mentor to d'Arnaud.
After reading the article it reminded me that if d'Arnaud is not ready for the majors we don't have a back-up catcher. Just say the organization decides they would rather that d'Arnaud play everyday catching Wheeler, Familia and Mejia instead of sitting the bench in the majors, then who will back-up Buck.
Alderson said after the Dickey trade that he would still be in the market for a back-up catcher. But while it's a stretch to consider d'Arnaud for the open day roster, he may actually make the team or could come up at any time during the season.
Therefore; it makes sense to have a back-up plan but it can't be one that you have much investment in; a waiver wire claim, trade in which player sent is low level prospect, minor league deal with an invite or if it's a major league deal it's one year under 2M.
The Mets do have Anthony Recker who has 27 major league games of experience with a .152 BA, is he enough of a back-up plan.
If you look at the free agent pool, it's been said that the Mets won't bring in anyone they've recently had which eliminates 7 of the available 10 catchers. Leaving Chris Snyder, Miguel Olivo and Matt Treanor as the only remaining catchers who have no connection to the Mets, I guess you could consider Yorvit Torrealba but after the failed signing and subsequent grievance I don't see that happening.
The Mets currently have 38 players on the roster and that's without cutting some dead wood and to my surprise they haven't claimed someone off waivers to at least compete with Recker. Eli Whiteside who has been available twice or Luis Martinez who Texas put on waivers two days ago.
Buck has been pretty durable over the years averaging 105 games per season in a nine year career,only one season since his rookie year has he caught less then a 100 games which was 2009 with the Royals in which he appeared in 59 games. But what if Buck goes down currently your either rushing d'Arnaud or Anthony Recker is your starter...
The list of free agent catchers: