An attorney for Oklahoma State says the school could seek sworn testimony from Texas football coach Charlie Strong, Longhorns players and school administrators in its legal fight to recover nearly $600,000 from former Cowboys assistant Joe Wickline, who is now at Texas.

Oklahoma State sued Wickline in October for breach of contract, saying a clause in his contract let him leave without financial penalty only if he took a job with play-calling duties.

Wickline countersued in Austin, saying he does call plays, even though Strong has said another assistant, Shawn Watson, is the "final voice" in games.

Oklahoma State lawyer Sean Breen said Wednesday the school is prepared to question Strong and "a lot" of others, including players, in pursuing its case.

A Texas official declined comment.