(CBS) One day after he fired off at the Cubs on Twitter, third baseman Ian Stewart has issued an apology.

“I just want to apologize to the entire Cubs organization for my comments on twitter,” Stewart tweeted Tuesday.

Seemingly frustrated with being stuck with the Iowa Cubs, Stewart went on a Twitter rant Monday night saying the organization is letting him “rot” and “might as well release me,” the Chicago Tribune reported.

The Cubs sent Stewart to Iowa on a rehab assignment in April after he injured his quad during a spring training game in February. In 110 at-bats this season for Triple-A, Stewart is hitting just .164 with a.279 on-base percentage.

Responding to one of his followers who asked when he’d be back with the Cubs in Chicago, Stewart responded: “Probably never… I said that because the Cubs are done with me. There going to let me ROTT in AAA all season and then non tender me after.”

When one of his followers said he was “worthless” and should “quit baseball,” Stewart replied: “why would I quit. I’m making 2 mill in AAA like u would give that up by quitting.”

Stewart later retweeted someone who seemingly took a shot a Cubs’ brass saying, “sad part is Stew isn’t an AAA baller. He is a big show baller in an org. With terrible leadership.”

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