Bill Mueller has resigned as hitting coach of the Chicago Cubs, but the position won't be filled by Manny Ramirez, according to a source.

The Cubs are already close to naming a new hitting coach.

Ramirez received positive reviews from his stint with Triple-A Iowa this season, but a source said Ramirez isn't under consideration for Mueller's job. However, Ramirez could be in the mix for the vacant assistant hitting coach position.