Sloan is not part of the Mariners' "immediate plans," Adam Jude of The Seattle Times reports.
Sloan's 4.44 ERA at Double-A Arkansas is a tad bloated thanks to a couple clunkers, but he boasts a 58:12 K:BB over 46.2 innings in his 11 starts. The 20-year-old right-hander is in the Mariners' plans for later this summer, per Jude, but Seattle already has six viable starting pitchers at the major-league level, and fellow prospect Kade Anderson could also be ahead of Sloan in the pecking order.