The Cubs have informed other clubs Starlin Castro is not available in trade, reports Jon Heyman of CBSSports.com. Heyman lists the Mets and Yankees (prior to obtaining Didi Gregorius) as teams who have been told the Cubs want to hang onto the 24-year-old All-Star shortstop. Gordon Wittenmyer of the Chicago Sun-Times tweets the Cubs have also assured Castro he will not be traded this offseason.

With a thin shortstop market and the Cubs having prospects Javier Baez and Addison Russell in the wings, Castro was a popular name for teams in need at the position. The Yankees were able to fill their shortstop vacancy by acquiring Gregorius earlier this week, but the Mets are still in the hunt for an upgrade over Wilmer Flores. Heyman, in a separate report, writes Jimmy Rollins still has not changed his stance on waiving his no-trade clause and the Phillies have relayed that position to the Mets and some other teams.