The Phillies and Orioles have had “very preliminary” talks about a trade involving starting pitcher A.J. Burnett, FOX Sports’ Jon Morosi tweets. Morosi further emphasizes that there has not yet been much progress toward a deal.

Burnett, who is making $7.5MM this year with a $7.5MM signing bonus, has a complex player/mutual option that guarantees him at least $7.5MM in 2015 if he wants to pitch (a guarantee that will increase as Burnett makes starts down the stretch). Burnett also has limited no-trade protection. Although Burnett has said he wants to remain with the Phillies, his no-trade clause likely does not include Baltimore, since Burnett’s family resides in Maryland. The Orioles were rumored to be interested in Burnett last offseason.

Burnett, 37, has posted a 4.08 ERA with 7.4 K/9 and 3.8 BB/9 this season for the Phillies. Both his ERA and his peripheral numbers have taken a step backward after a strong 2013 season in Pittsburgh.