Back in January, Lisa Kudrow guested on Cougar Town as a dermatologist Courtney Cox’s character loved and hated. Now it’s Jennifer Aniston’s turn to help out her former co-star.

When the ABC comedy returns on September 22, the Switch star will appear as a different specialist in Jules’ life. “She’s going to play Courteney’s shrink named Bonnie,” exec producer Bill Lawrence told EW. “Kind of a get-too-involved-in-her-life-type of therapist. Those guys are so close in real life they kind of do that for each other anyway. Bonnie has the life Jules wishes she has.”

Although this wouldn’t be the first time the two pals have worked together post-Friends (Aniston also appeared on Dirt), Bill says they were waiting for the right time to incorporate Jen.

“It took us a while to find the show,” he explained. “And once we did and once it was clicking, I think that not only did Courteney feel comfortable talking to Jen about doing it, but comfortable in how funny she thinks the show is and that Jen would like it and fit into this world really well.”

If things go well—and she has time between her box office disappointments—Jen could be asked back again. “We’re very intentionally implying that it’s a therapist Courteney has been using for a while, and we’re certainly not going to make it like they’ll never see each other again,” Lawrence teased.

(To get a look at TV Envy’s Fall 2010 Programming Schedule, click here.)