Let me try again. There are several sources of players.
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COST EFFECTIVE OPTIONS
One of the most cost effective is rookie contracts. Players who perform well in rookie contracts are the best deal there is.
Another fine source (that Belichick has used well) is aging vets who may have a couple of years left.
Another fine source is players who want a one-year show-me contract.
Another fine source of players is near minimum salary vets (good for backups and end of hte roster players).
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EXPENSIVE OPTIONS
There is no way out. Some players will be in the prime of their careers. Unless they play at a discount, it makes no difference whether you find these players in free agency or the draft.
Some positions are easier to fill and develop in the draft; for some, free agency works best.
The advantage of signing your own is that you know what you are getting. Beyond that the money is the same. Paying Welker $20M for two years is the same as paying Wallace $20M. It makes no difference at all that Welker has been a bargain in the past. He will NOT be a bargain in the future. It makes no difference if you can go back and included past contracts to compute long-term costs. The DECISION is today's decision to pay for future performance.
This principle was greatly misunderstood when Brady restructure the rest of his present contract and extended for $9M a year. Brady's new money was $27M over 3 years. a tremendous discount.
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BOTTOM LINE
I suspect that most of our disagreement is semantics. We agree that we shouldn't overpay anyone. And we agree that getting value out of rookie contracts is critical to a team's success.
No I said you compensate him based on his market value now and even still you got a great deal for his entire 11 years with us. That is what I wrote.. Never did I write or imply to overpay him. His market value is 4-5 years at 30-40 million. Which if you add to what's already been paid makes him a 5.9m a year player over 11 seasons of being a very productive patriots. Now if you sign Wallace you're likely to pay an average of 10-12 million per year for his patriots career because he did not start here and the Steelers received the benefits of his lower priced years. I'm saying in short it is not a good business model to build outside of the draft.