4:37pm: Furbush's one-year deal is worth $750K, according to Jeff Passan of Yahoo Sports (Twitter link).
4:13pm: The Mariners have signed left-hander Charlie Furbush to a one-year deal, according to MLB.com's Greg Johns (on Twitter). Furbush isn't technically arbitration eligible at this point, but Ruben Tejada's pending grievance against the Mets could change that.
As was reported last month, an extra day of service time would give Tejada exactly three years of service time. Furbush would then have the next-most service time among players with two-plus years, pushing him into the top 22 percent and making him eligible for Super Two status.
The Mariners have therefore avoided any potential issues by agreeing to a deal with Furbush in advance of that move. The 27-year-old Furbush posted a 3.74 ERA with 11.1 K/9 and 4.0 BB/9 in 65 innings for the Mariners last season, holding opposing lefties to a meager .173/.266/.236 line along the way.