OAKLAND, Calif. — All-Star third baseman Josh Donaldson said he always felt there was a chance he’d be traded by the Oakland A’s someday.

But he was stunned to be traded Friday to Toronto in a four-for-one deal that sees the A’s getting third baseman Brett Lawrie, right-handed pitcher Kendall Graveman, left-handed pitcher Sean Nolin and Class-A shortstop Franklin Barreto.

Oakland General Manager Billy Beane probably is not finished for the offseason with baseball’s winter meetings just over a week away.

Sources tell this newspaper the A’s are exploring a deal with the Braves that could net either outfielder Justin Upton and/or catcher Evan Gattis.