You think a one month drop off in a players performance affects the Sox's long term plans for a player? I would be pretty surprised if that were the case. Baseball is a game of adjustments. Scouts get paid a lot of money to find a player's flaws, and especially when you're a young player who's having a lot of success early on you know the league will get the book on you soon. The past month for Reddick doesn't mean anything to the Red Sox, it's how he adjusts and bounces back that matters to them. Theo's said numerous times that it's an important part of every players development to fail at every level. That's when you learn whether or not a guy can play every day and that's what we're about to learn about Reddick. Also, I don't know how we can say a guy who lost a year to injury is more likely the RF of the future over a guy who is probably going to hit .275/.330/.450 in the bigs this year in a worst case scenario.
I don't think Reddick or Kalish has any impact on Ells' future with the Sox. If he continues as a perennial .300 30/30 threat, he's going to market and thats not a good thing, but I think he'll be a Red Sox for a while.
I could be wrong, but Lester is a FA the same year, no? I'm not saying this will be the case, but if it comes down to Lester or Ells I tend to doubt the Sox would choose to pay Ellsbury.