Rockies closer Huston Street isn’t a free agent. But don’t be surprised if he changes teams this off-season.

The Orioles and Blue Jays are among the teams that have expressed trade interest in Street, major-league sources say.

The Mets discussed trading right-hander Mike Pelfrey for Street, but backed off, according to the New York Post.

Street, 27, is owed at least $8 million - $7.5 million next season plus a $500,00 buyout on a $9 million club option for 2013.

The free-agent market, meanwhile, is deep in closers – one of whom, Denver-area native Brad Lidge, would appeal to the Rockies if they traded Street.

The Orioles’ interest in Street stems from two factors – their desire to move right-hander Jim Johnson to the rotation and reluctance to keep righty Kevin Gregg as their closer.

The Rockies have shown past interest in right-hander Jeremy Guthrie, who will get a raise from his 2011 salary of $5.75 million in his final year of arbitration. For the Orioles to move Guthrie, they likely would need to obtain another starter in the trade or find one somewhere else.

Street had mixed results last season, finishing with the highest ERA and WHIP of his career. However, he also produced his best strikeout-to-walk ratio and converted 29 of 33 saves.

-Ken Rosenthal