Jul 17, 2007 10:33 AM EST

While Barry Zito, the San Francisco left-handed pitcher who signed a seven-year, $126 million deal during the offseason, participated in a pregame practice late Monday afternoon at Wrigley Field, a guy who could command an even bigger deal was sitting at his locker in the Cubs clubhouse.

And he was predicting he would stay in that clubhouse a long time.

Cubs ace Carlos Zambrano said he was "90 percent" confident he would stay with the North Siders even though he and the team are at an impasse over a contract extension. It is believed the two sides were close to a four-year deal worth more than $70 million at the beginning of the season, but then came the announcement that the Cubs were being sold and contract extension talks were put on the backburner.

Despite Monday's comments, Zambrano said he isn't ready to sign quickly, nor is he ready to offer the Cubs a huge hometown discount.

Via Daily Southtown