Here's why Springer is going to be down for 2 months...
Let's look at a recent outfielder who just completed his contract and signed as a free agent.
2007, age 23 - 1 year, contract purchased 6/30/07
2008, age 24 - 1 year/$0.406M, re-signed 3/6/08
2009, age 25 - 1 year/$0.4495M, re-signed 3/09
2010, age 26 - 1 year/$0.4965M, re-signed 3/8/10
2011, age 27 - 1 year/$2.4M, re-signed 1/18/11 (avoided arbitration)
2012, age 28 - 1 year/$8.05M, re-signed 1/17/12 (avoided arbitration)
2013, age 29 - 1 year/$9M, re-signed 1/18/13 (avoided arbitration)
He was called up on June 30 in his first year and avoided super 2 status. This made his first 4 years very cheap to the team. The last 3 years, the team negotiated a pre-arbitration deals, which was still a substantial raise for the player.
Over this entire contract the player made over $21.25 million as a major leaguer.
If he had been super 2, his 2010 season would have been arbitration eligible and you lose a year of him being cheap (less than $500 K) and gain a year of him costing over $9 million dollars. Now this player would have hypothetically made over $30 million over his 7 years.
Avoiding super 2 can eventually save the team around $10 million or more... USUALLY MORE, as a matter of fact.
Springer will be called up in May/June to avoid super 2.
This is his age 24 season.
So here's what his career with the Astros will look like:
2014, age 24, contract purchased
2015, age 25, $500K+
2016, age 26, $500K+
2017, age 27, $500K+
2018, age 28, Arbitration
2019, age 29, Arbitration
2020, age 30, Arbitration
If he becomes a super 2, that means he becomes arbitration eligible in the 2017 season, and he is a much more expensive player. He would probably cost no less than $10-$15 million more over the 7 years he'll spend as an Astro.Now, Springer is gambling on himself by turning the $23 million dollar extension down. If he becomes a Justin Maxwell... a player called up and down but can never stick because of contact issues... he may never make anywhere near half of $23 million in his career. However, if he signed that deal and becomes a stud, he could potentially make more through arbitration, probably upwards to nearly $30 million.
Good thing is... if Springer does become a star, and bolts for the Yankees, we will still have had him through his "power prime" years. It's the business of baseball. By 2020, if he's looking to bolt, we could have already drafted another outfielder or signed one...
Hell, maybe by then, we've won a World Series and players are begging to sign with the Astros.

[This message has been edited by irish pete ag06 (edited 3/24/2014 4:54p).]