The Cubs will place Carlos Zambrano on the restricted list tomorrow, according to MLB.com's Carrie Muskat (via Twitter). Players on the restricted list do not count towards a team's 25-man or 40-man roster, so the Cubs will be able to add a player to replace Zambrano. It's not the first time a prominent player has been placed on the restricted list this year; former Cub Milton Bradley spent time on the restricted list earlier in the year, and so did Yorvit Torrealba.
By placing Zambrano on the restricted list, the Cubs free up a roster spot and provide themselves with time to determine their next move. The Mariners paid Bradley while he was on the restricted list, but teams do not always pay players on the restricted list. The Cubs will pay Zambrano, according to Bruce Levine of ESPNChicago.com.
Paul Sullivan of the Chicago Tribune reports that Zambrano will not return before the All-Star break as he undergoes treatment for anger issues. Cubs GM Jim Hendry contacted MLB, the MLBPA, Zambrano and agent Barry Praver about the team's decision.
The Cubs may want to move Zambrano and (part of) the $45.4MM remaining on his contract, but trading the big right-hander won't be easy, as MLBTR's Tim Dierkes showed earlier today. Teams are presumably uneasy about acquiring Zambrano given his salary, his recent tirade, and his 2010 numbers (5.66 ERA, 8.6 K/9 and 4.0 BB/9).