Kendall Jenner turned into a stage-five clinger when it came to basketballer Ben Simmons, and now she may be in desperate need of a rebound. A tipster tells Star the model, 23, scared her 22-year-old boyfriend off when she became busy making plans for their future. “Kendall started thinking about settling down,” dishes an insider. “Ben was really into her, but he wasn’t ready to start a family.” The athlete grew frustrated that Kendall was eager to be the next Kardashian to bring home a kid — after only a year of dating. What began with the reality star “dropping hints for Ben to propose by talking about her dream engagement ring” quickly escalated into “telling people that seeing her sisters as moms gave her baby fever,” adds the insider, noting that Ben ultimately slam-dunked his relationship because “he started to get freaked out!” Cue the buzzer.