Assumptions:

1. Langerhans is in right field, either every day or in a platoon arrangement with McCarthy/Some Guy.

2. Francoeur doesn’t fool the Braves into putting him on the roster by beating up on fastballs in spring training ala Travis Wilson.

3. The money exists to get someone to play left field.

Leave aside the names that have been mentioned: let’s break it down into dichotomies. What are we looking for in a left fielder?

A guy who gets on base, or a guy who hits home runs?
A lefthanded hitter, or a righthanded hitter?
More defense, or more offense?
A younger guy we can keep for a few years, or an older one to hold the fort until Marte and Francoeur are ready?

And so on. Obviously, we’d like a guy who’s a switch hitter with power and high walk totals and good batting averages and a first-class defensive player. But Mickey Mantle’s dead, and even if he were around and in his prime he’d surely wind up with the Yankees again. So we make our choices from what’s out there.