The Cowboys have signed linebacker Leon Williams to a future contract as of yesterday afternoon.
Interestingly enough, his best season--2007--came under Cowboys' defensive line coach (and, lately, object of University of Georgia's affection) Todd Grantham, who was serving as defensive coordinator under Romeo Crennel.
That season, he recorded 88 tackles and four sacks.
Since being waived by the Browns in September of 2009, Williams saw time as a member of the UFL's New York Sentinels. He will not be eligible to practice with the team until the season draws to a close, per NFL policy concerning future signings.
Williams worked out for Philadelphia last month.