First my thoughts on Manny's value as a trade piece, then a quick look in to the future...TO THE YEAR 2000!
I think Manny would actually have value right now if he were raking...but if he were raking, the Sox (and the fans) still wouldn't want to deal him. For the first time in several years (IMO), Manny is somewhat close to market value. He's due 38 million over the next two years (18 this year and 20 in 2008) with options that are unlikely to be picked up. Now, that's not a bargain, but with guys like Barry Zito and Alfonso Soriano getting a LOT of money this offseason, the 19 AAV doens't look bad. He's overpriced, but not as much as he was a few years ago when Vladdy signed on the cheap with the Angels and the market looked like it was deflating.
In addition, the length of the deal is also reasonable now. It's two years instead of four, and Manny's been a very consistant slugger (if not this year). Basically, he's not a bad trade chip right now. Also, the Red Sox have done really well, despite him hitting like an average OF or worse so far. That gives a psychological edge that the Sox could survive without Manny, at least to some fans, which is all the team needs.
Of course, that poor performance is a double-edged sword when we talk trade: who wants him. If the Sox couldn't get a legitimate package when he was a Top 3 hitter or whatever, what are they going to get now? Additionally, does John Henry really want to pay some team to take Manny after paying Atlanta to take Edgar Renteria? I doubt many teams could afford Manny straight up, and the ones who could are not teams we want Manny on as fans.
Oh, and he has those pesky 10-5 rights, which probably take out a bunch of good trade partners unless CHB decides to wait outside Manny's house with binoculars and write about how he is a horrible human being as he left the house three minutes later than he should have.
As for the future (near future, 5 years or less), what do the Sox have set. I think we can assume 1B is Youk's, DH is Ortiz, 2B is Pedroia, SS is Lugo, RF is Drew (if he doesn't crash). That's five of nine offensive positions. I have to assume Kotteras (C) and Ellsbury (CF) will get first crack at the positions when TPTB decide to boot CocoPena and Varitek decides to hang 'em up. We have no long term solution at 3B and there's nothing good on the FA market, so unless Youks decides to go back to 3B (then we find a new 1B, no small task for the team that has employed some pretty horrid options there before), there's no solution in sight. LF is up in the air: maybe a minor league OF will breakout to take it, maybe CocoPena will still be around to fight over it, but there are options there.
If we're looking for a Long Term Solutions in trade, I don't think we look for Crawford or Teixeira who will cost a lot of talent and money, maybe someone a little more reasonable (Is Edwin Encarnancion a good enough fielder for 3B? Would Adam Dunn be a realistic 1B for a year (move Youks to third for 2008) and then place him in LF if Manny leaves (I think he's a FA in 2008). I doubt Dunn would be as expensive as a Crawford or Teixeira as he is on a team who isn't competitive and he's already costing the Reds (who seem to have a small-ball guy at GM) some dough. I'd love Teix/Craw on the team, but to give up two-three future LTS for them?
For pitching, I think the Sox are a bit brighter. You figure Schilling could retire next year or after 2008. And who knows on Wakefield (who is under a perennial contract), but I think you can pencil him in until he doesn't want to do it anymore. But the Sox have Beckett and Matsuzaka under control for a while, who look to be promising. Lester looked very nice in his earlier outings. I'm doubting Papelbon leaves the closer role, but if he needs to, he can. Buchholz and Bowden look like good prospects as well. With pitching as expensive as it is now, I think the Sox did very well in preparing themselves. Relievers...who knows if MDC, EMart, etc. will ever pan out.
If I'm the Red Sox looking into the future, I call up Wayne Krivsky right now and see if you can steal Encarnancion (who Narron seems to dislike) or Dunn (who is eating up money and needs a 13m dollar option to stay next year.
My ideal 2009 Opening Day Lineup (in real terms)
C: Kotteras
1B: Youkilis
2B: Pedroia
SS: Lugo
3B: Ensberg/Glaus? (Haven't looked into 2009 FA 3B, all I know is that the 2008 class sucks with the Sox giving up the best one if A-Rod doesn't leave)
LF: Dunn
CF: Ellsbury
RF: Drew
DH: Ortiz
Bench: Who really cares? Preferably containing of a couple farmhands (Brandon Moss and David Murphy in the OF) and a couple solid utility IF/catchers (If Mirabelli surgically attaches a 61 foot rope to Wakefield...)
SP: Beckett, Matsuzaka, Wakefield, Lester, Buchholz/Bowden/FA (some great ones in 2009 if a couple don't re-sign)
RP: Papelbon, Okajima (if he's re-upped), a couple free agents, and a couple farmhands (Maybe Manny Delcarmen and Edgar Martinez)