Both players are headed back onto the 40-man roster. The reason for this approach, as Alex Speier of the Boston Globe explains on Twitter, was to enable the sides to agree to a different contract structure than would have been possible in the arbitration context.
Osich gets a split contract with a $850K MLB salary, according to Speier (Twitter link). He had projected to earn $1MM via arbitration after being claimed by the Red Sox from the White Sox in October. The 31-year-old worked to a 4.66 ERA in 67 2/3 MLB innings last year, recording 8.1 K/9 against 2.0 BB/9 but coughing up 15 home runs.
As for Hernandez, whose re-signing was reported yesterday, he’ll have a split deal with a MLB rate of $650K MLB (also via Speier, on Twitter). He hasn’t done much damage with the bat in limited opportunities at the game’s highest level, but the organization obviously still thinks the versatile defender could be a valuable roster piece. Hernandez, who hopes to put his shoulder issues behind him in 2020, had projected to earn $700K via arbitration.