McClellan, 28, allowed 11 runs in 18 2/3 relief innings this season while missing considerable time with elbow and shoulder injuries. He had surgery in July. McClellan pitched to a 4.19 ERA with 4.8 K/9 and 2.8 BB/9 in 17 starts and 26 relief appearances for the Cardinals last year. Matt Swartz projected the right-hander to earn $2.4MM during this third trip through arbitration this winter.
Johnson, 30, hit .250/.298/.288 in 58 plate appearances with the Mets last year. He spent most of the season in Triple-A, where he put up a .207/.253/.335 batting line with four homers in 178 plate appearances. The catcher is a career .201/.277/.297 hitter at the big league level, with most of his playing time coming with the Mariners.