Here's the full list of 5 WAR players this year that will be under 30 next year (Age next year at ASB, FA year): 9.4 - Jacoby Ellsbury, BOS (28, 2014) 8.7 - Matt Kemp, LAD (27, 2013) 8.0 - Dustin Pedroia, BOS (28, 2015) 7.8 - Ryan Braun, MIL (28, 2021) 7.3 - Miguel Cabrera, DET (29, 2016) 7.0 - Justin Verlander, DET (29, 2015) 6.9 - Alex Gordon, KC (28, 2014) 6.9 - Joey Votto, CIN (28, 2014) 6.8 - Clayton Kershaw, LAD (24, 2015) 6.4 - Justin Upton, ARI (24, 2016) 6.3 - Troy Tulowitzki, COL (27, 2021) 6.2 - Jose Reyes, NYM (29, 2012) 6.1 - Evan Longoria, TB (26, 2014 2017) 5.8 - Howie Kendrick, LAA (28, 2013) 5.7 - Andrew McCutchen, PIT (25, 2016) 5.6 - Robinson Cano, NYY (29, 2012 2014) 5.6 - Doug Fister, DET (28, 2016) 5.6 - Jered Weaver, LAA (29, 2013) 5.5 - Alex Avila, DET (25, 2016) 5.5 - Madison Bumgarner, SF (22, 2017) 5.5 - Prince Fielder, MIL (28, 2012) 5.5 - Felix Hernandez, SEA (26, 2015) 5.2 - Matt Cain, SF (27, 2013) 5.1 - Brett Gardner, NYY (28, 2015) 5.0 - Matt Garza, CHC (28, 2014) 5.0 - Ian Kennedy, ARI (27, 2016) That's a total of 26 players in baseball (and one is even already on the Cubs!). What I'm illustrating with this is that these kind of players are rare as it is, and the ones that do exist are even less frequently available on the market because teams either have them locked up for the duration of their prime years (Braun, Tulowitzki, Longoria and holy crap do the Rays have a team-friendly deal on Longoria) or are in franchises that have a top 5 payroll to hang onto them long-term and have no excuse not to (Ellsbury, Pedroia, Gardner, Kendrick, Weaver). Fortunately (for other teams), the Dodgers and Mets are in ownership flux right now, and may not be able to keep their young FAs (Reyes, Kemp, Kershaw). So, the only way the Cubs are going to be able to get players of this caliber are: 1) Build them from within, but the only player on the roster with the potential to reach this plateau is Castro, so any other development has barely started yet. 2) Acquire the above players when they become available due to their clubs not being able to afford them, either through free agency or a trade (which the Cubs have limited assets attractive to most other teams). As much as I'd like to see how available guys like Gordon, McCutchen and Upton might be, the most available solution is to grab guys like Fielder, Reyes and Kemp by spending only money. That's a way to add to the team both short and long term. For reference, Pujols was a 5.1 WAR player this year after being an 8+ WAR player the previous 8-9 years. My main concern about Pujols is that we have to, as Epstein said, pay for future performance and not past performance.