ALLEN PARK, Mich. – The Detroit Lions have signed former Cowboys quarterback Drew Henson, a high school and college standout who has struggled at the professional level in baseball and football.

Terms of the signing, announced on the team's Web site, weren't disclosed.

Henson was signed after second-year quarterback Drew Stanton sprained the thumb on his throwing hand in practice Thursday. He will be sidelined about a month.

Henson was traded to the Dallas Cowboys in 2004, started one game and was released at the end of the 2006 preseason. He signed with the Minnesota Vikings, who released him after training camp in 2007.