It isn't unusual for Ted Thompson to play hard-ball with an aging veteran such as Wells, but it is surprising to see Wells apparently regarded as a low-priority signing.
There is a lot of risk in the Packers approach, but also the potential for a huge reward.
On one end of the spectrum, if the Packers are evaluating Wells' worth and desirability correctly, he could end up coming back to the Packers at an extremely reduced cost. And even though money isn't a huge issue for the Packers regarding Wells, they definitely don't want to overspend simply because they are able.
This strategy worked to perfection for the Packers last year with wideout James Jones. Jones was expecting to hit the market with a lot of momentum after getting low-balled by the Packers. Unfortunately for Jones, the demand for his services simply wasn't there. In the end, he decided to come back to the Packers as a slot/rotational wideout for a relatively cheap price tag.
Conversely, if the Packers push themselves away from Wells completely, he could easily hit the open market and find a team that is both in need of his services and willing to pay for it.
In that case, the Packers have very little to work with on there depth-depleted offensive line. Evan Dietrich-Smith would be the expected starter at center going into camp. You also have to assume that center just blew up on the Packers draft board for the upcoming NFL draft.
There is only one question that remains. How much interest will Scott Wells, one of the leagues best centers over the last two or three years, generate on the open market?