The news was reported by MMAJunkie.com on Monday.
Sakara was forced out of the bout, which has not yet been officially announced, due to a broken ankle.
Kimmons has won his last three-straight bouts over Ryan Sheeper, Fernando Rivera, and Tristan Yunker and has won eleven of his last twelve fights. His three career losses have all come at the hands of UFC veterans Marvin Eastman, Ryan Jensen, and Joe Riggs. Sixty-percent of his victories have come by way of submission.
Yundt made his UFC debut on short notice, filling in for an ill Alan Belcher, and was defeated by Ricardo Alemida via first-round submission at UFC 81. He had won all six of his previous professional bouts in the Alaska Fighting Championship.
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