The Cubs have signed Dontrelle Willis according to Jon Heyman of CBSSports.com (Twitter links). The left-hander officially gets an invitation to minor league Spring Training, but could get a look in big league camp if he's throwing well. The 2003 NL Rookie of the Year is a Sosnick/Cobbe client.

Willis, 31 later this month, retired from baseball back in July. He allowed eight runs in 6 1/3 innings with the Orioles' Triple-A affiliate early last season before calling it quits. Willis last appeared in the big leagues with the Reds in 2011, when he pitched to a 5.00 ERA with 6.8 K/9 and 4.4 BB/9 in 75 2/3 innings across 13 starts.

Willis started his professional career with the Cubs, who drafted him in the eighth round of the 2000 draft. Chicago traded him to the Marlins as part of the package for Matt Clement and Antonio Alfonseca two years later.