"We're talking about it," Marshall said, according to the paper. "We might have something Monday."
The 29-year-old has 56 holds in the last two yeas and has struck out 169 over 150.1 innings in that time as well.
"That's one of the things we said we wanted to do when he traded for him," Reds GM Walt Jocketty said, according to the paper. "We want to get it done sooner than later. We'd like to get it done before games start."