Discussions to sell the Cubs have reopened with a second bidding group as negotiations continue with the Ricketts family. The Tribune Co. has been trying to sell the team to the family for more than two years, and agreed in January to sell the Cubs and other assets to the Ricketts for $900 million. The exclusivity period between the two parties has ended, and the Tribune Co. is now talking to a group that includes private equity investors Marc Utay and Leo Hindery, according to sources.