The Athletics and Yankees continue to discuss a potential trade for right-hander Sonny Gray, with both sides making concessions but no agreement reached yet, sources told ESPN.

Gray, one of the marquee names being shopped, was scheduled to pitch Sunday for Oakland but had that start pushed back to Monday night -- hours after the 4 p.m. non-waiver trade deadline.

Earlier Saturday, a source told ESPN that Athletics executive vice president Billy Beane was ready to "walk away'' and try again this offseason if he can't land the package he wants for Gray.