Los Angeles, CA -- (Sports Network) - The Seattle Mariners have reportedly agreed to trade right-handed pitcher Brandon Morrow to Toronto for reliever Brandon League and a prospect.

FOXSports.com cited a major-league source on Monday night as saying the deal is pending physicals, though neither team confirmed the trade is in the works.

Morrow, 25, was one of Seattle's prized prospects after being taken with the fifth overall pick in the 2006 draft. The flame-thrower first worked out of the bullpen to solid results in 2007 before being switched between a starter and reliever the past two years.

Overall, Morrow is 8-12 in 131 games -- 15 starts -- with a 3.96 earned-run average to go with 204 strikeouts in 197 2/3 innings.

League, also a righty, went 3-6 with a 4.58 ERA in 67 appearances last year in Toronto, where he has spent all six of his big-league seasons. In 168 career games, the 26-year-old is 7-10 with a 4.09 ERA.