Eberhardt is mentioned in a proposed update to Kline Greenlemon's main-universe article (IF-21.348).
Summary: during Eberhardt's first spell with the Dallas Steaks, Engine and Greenlemon became close friends. At the end of Season 19 Greenlemon accompanied Eberhardt on an epic road trip back to Tokyo, subsequently joining the Lift. The full text of the proposed update is linked at https://www.blaseball.wiki/w/Topic:X5zs433wfsmraelr
