He received a substantial raise from his $603,000 salary last season, when the 27-year-old went 10-6 - matching his career high for wins - with a 4.82 ERA in 25 starts and a career-best 134 1-3 innings.
Left-hander Robbie Ross, who earned $566,500 in 2015, asked the Red Sox for $1,325,000 while the team offered $1,075,000 in figures exchanged Friday. The 26-year-old Ross was 0-2 with a 3.86 ERA and six saves in 54 appearances over his first year in Boston.
Right-hander Junichi Tazawa asked for $4.15 million as Boston countered with an offer of $2.7 million. Tazawa, who went 2-7 with a 4.14 ERA in 61 outings, made $2.25 million last year.