Allen running back and four-star recruit Jonathan Williams decommitted from Missouri earlier this week, Allen coach Tom Westerberg said.
Missouri was the first school to make Williams an offer, but after committing he went on an official visit to Arkansas the weekend after Allen's win over Plano East on Oct. 6.
Williams stressed that Missouri's departure from the Big 12 to the SEC had nothing to with his decision.
"It's not going to affect too much," Williams said after the Plano East game. "I either know they will be in the Big 12 or the SEC. It doesn't matter really."
Williams told ESPN Recruiting's Damon Sayles that Arkansas now leads the pack to land the No. 16 running back in the nation because of it's proximity to his home.
For more information on Williams decision, click here for Sayles' story on ESPN Recruiting (must have insider access).