BOSTON — The Red Sox agreed Wednesday to one-year contracts that avoided salary arbitration with right-handers Matt Barnes, Ryan Brasier and Austin Brice and catcher Kevin Plawecki. Barnes gets $4.5 million, Brasier $1.25 million, Brice $870,000 and Plawecki $1.6 million. A day earlier, the Red Sox agreed to an $8.3 million, one-year deal with left-hander Eduardo Rodriguez. Third baseman Rafael Devers is Boston’s only remaining player eligible for arbitration. Barnes took over as Boston’s closer after Brandon Workman was traded in August.