Chris Volstad RHP Royals/ Cubs: Volstad was taken with the 16th pick in the 2005 draft by the Florida Marlins, the same draft the Mets took Mike Pelfrey. With Pelfrey going to the Twins, a cheaper 26 year old with still some upside should be considered. Last year, he was just 3-12, 6.31 with the Cubs and still has minor league options if it is a matter of getting this guy back on track. It was only 2010 when he was 12-9, 4.58 in 175 IP for the Marlins. Pelfrey got paid because he pitched well before his injury. Volstad will end up with a minor league contract because he has digressed over the past two seasons. It cannot hurt.
Juan Oviedo RHP Marlins: Oviedo missed all of last season due to his intentionally mistaken identitiy. He managed over 30 saves over both the 2010 and 2011 seasons. His strikeout to walk ratio went down over those two seasons and there are questions of him being as effective after a full season lay off. He should be had on a deal similar to the other two pitchers, with perhaps some performance incentives to sweeten the deal.
If the Mets add these three pitchers, it will cost them nothing. None may help, but at least it will create some possibilities. To simply give a spot in the rotation to Jenrry Mejia and bullpen spots to Robert Carson and Jeurys Familia is not responsible. I know that many "want to see the kids", but I prefer to see them earn their spot on the team, not take an empty space that is given to them.