10:50am: Masterson’s camp will not necessarily act on the offer immediately, tweets Gordon Edes of ESPNBoston.com, as it still has teams to meet with.

8:38am: The offer is actually only for one year, Cafardo tweets. Reports have not clarified whether the deal would include any option years.

With that in mind, Boston appears to be competing on more equal footing with other teams that are said to have made or weighed offers to the righty.

7:21am: The Red Sox have offered Justin Masterson a multi-year deal with the idea of using him as a starter, Nick Cafardo of the Boston Globe tweets. CBS Sports’ Jon Heyman reported yesterday that the Red Sox had made Masterson an offer. A number of teams have shown interest in Masterson, so it’s not that surprising that he would already have at least one multi-year offer despite his disappointing 2014 season, in which he dealt with injuries and a (likely related) loss of velocity.

In October, MLBTR’s Zach Links predicted Masterson would take a one-year, $12MM deal, but that was predicated upon the idea that he would want to use that year to rebuild his value before hitting the free agent market again. Last offseason, Masterson appeared headed toward a huge contract, and he might yet be able to get one if he took a one-year deal and then had a big 2015 season.

Masterson, of course, came through the minors with the Red Sox, who sent him to Cleveland when they acquired Victor Martinez in 2009. After four straight years in which he was solid or better from the Indians (he had a poor ERA in 2012, but his peripherals that season remained reasonable), his ugly walk year resulted in a trade to St. Louis last July. For the season, he posted a 5.88 ERA with 8.1 K/9 and 4.8 BB/9 in 128 2/3 innings.