Xiahou Ba
The "Han Jin Chunqiu" mentioned that the Shu general Jiang Wei also asked Xiahou Ba, "Now that Sima Yi is in control of the Wei government, is he still planning to launch any campaigns against Shu and Wu?" Xiahou Ba replied, "He focuses on strengthening his family's control of the Wei government and doesn't have time to bother about external affairs. However, there's one Zhong Shiji. He may be young, but he'll definitely become a threat to Wu and Shu in the future. Despite so, even the most extraordinary people can't control him." Xiahou Ba was proven right 15 years later because Zhong Hui was one of the key figures in the Wei conquest of Shu.