The Cubs have designated catcher Eli Whiteside for assignment, Bruce Miles of the Daily Herald reports (Twitter link). Welington Castillo has been activated from the disabled list in a corresponding move.

Whiteside was called up from Triple-A Iowa when Castillo hit the DL earlier this month. Whiteside hit only .120/.115/.160 in 26 PA over eight games with Chicago, his first taste of big league action since 2012 when he was a member of the Giants. The 34-year-old signed a minor league deal with the Cubs in the offseason and Miles believes Whiteside will return to Iowa if he isn’t claimed.

According to the MLB Trade Rumors DFA Tracker, Whiteside joins Kevin Slowey (Marlins), J.J. Putz (Diamondbacks), Josh Outman (Indians), Roger Bernadina (Reds), Jake Dunning (Giants) and Evan Reed (Tigers) in “DFA limbo.”