This avoids an unfortunate point about the Patriots. They cannot develop their own WRs or have failed in most instances during the Belichick era. This is also a question of basic resource management, if you have a position that requires a learning curve, do you want to be the team that has to absorb that young players growing pains? Or the team next in line after the player has learned the ropes on how to survive in the NFL and what role he serves in the team format? Generally the trade off is market contract to post learning curve production. The value of a player on his rookie contract is he can provide "value" above, and sometimes far above his compensate against the hard cap and his general positional value based on his position on the field. The player provides much less "resource value" ( though maybe not "playing value") when he signs that 2nd contract, that tries to equalize his skill set currently to market forces around the league that sets his compensation level. This situation, much like what many teams try to do, is find a discarded player, where the former team has already absorbed some of the cost of said "learning curve" and written off as a sunk cost not worth the roster spot to further explore. Every roster spot becomes, in essence, a form of "opportunity cost" It doesn't matter if Salas works out as an individual. It matters if Salas types work for the Patriots at a high enough success rate to make the endeavor worthwhile. It also highlights a waste of resources by the Patriots ( Chad Jackson, Taylor Price, Brandon Tate, cost of the picks to get Gabriel Wilson, Chad Johnson, etc) that make this kind of mining frequent and worth the investment despite the relative low return. The success of a Randy Moss or a Wes Welker wasn't just the cost of that 2nd, 4th and 7th, but also the total cost of every failed pick that didn't pan out a WR and every trade or waiver flier taken on a zero return player.