The Cubs are finalizing a trade to acquire closer Ryan Pressly from the Houston Astros, pending medical review, sources told ESPN's Jeff Passan on Sunday.

Pressly will waive his no-trade clause to facilitate the move, and Houston will send money to help cover his $14 million salary, the sources said.

The Astros will receive a low-level Cubs prospect who is not on Chicago's 40-man roster, according to a source.