Matthew Perry with former co-stars Jennifer Aniston and Lisa Kudrow
Matthew will be only the latest in the line of Lisa's old Friends to appear, according to Digital Spy. Her show has already featured cameos from Courteney Cox, David Schwimmer and Matt LeBlanc, and now Matthew - who played the self-doubting Chandler in 'Friends' - will appear in Series 4.
The alumni of 'Friends' have proved they obviously like working together still - with Jennifer Aniston also appearing in her great chum Courtenay's hit show 'Cougar Town'.
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The Friends have worked together often since the finale of their record-breaking show in 2004
And Matt LeBlanc has also joined in the fun, making a great show of trying to get his former co-stars to appear with him in his show within a show - on his hit sit-com 'Episodes' - with none of them agreeing, and some of them referring to a past 'spat', for which he can only apologise.
Despite all this goodwill, fans must remain disappointed for any chance of a proper reunion for the stars of one of TV's most successful ever sitcoms.
All six have made it clear they don't want to ruin the memory of a brilliant show, with Matt LeBlanc telling HuffPostUK recently of the many reasons why it really won't happen. Read his explanation here...
"And I know that all six of us feel the same way," he added. So that's that, then. If you want to savour again the wonderful chemistry enjoyed by this rich bunch, better tune into 'Web Therapy for a small reminder.
Other guest stars in the next series will include Jon Hamm and Allison Janney, with the series due to debut in October.
'Friends': Where The Gang Would Be 10 Years On...
Monica Geller - Courteney Cox(01 of08)
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Famously highly-strung, Monica would now have discovered a new zen way of life after raising twin babies with no one but Chandler for company out in the suburbs.The rest of the gang don't come around as much when Chandler's not home, because Monica makes them do shots of wheat grass and listen to whale sounds. (credit:Getty Images)
Chandler Bing - Matthew Perry(02 of08)
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After moving out to the suburbs with his wife and twin babies, we're expecting Chandler to have really settled down and, would now spend his days leaving work at 5pm sharp, playing catch in his backyard and wondering aloud: "Could I BE anymore of a good dad?" (credit:Getty Images)
Phoebe Buffay - Lisa Kudrow(03 of08)
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Now a multi-millionaire after a David Guetta remix of 'Smelly Cat' - featuring vocals from Sia and a guest rap from Pitbull - became an unexpected dance-floor smash. (credit:Getty Images)
Joey Tribbiani - Matt Le Blanc(04 of08)
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In 'Friends' spinoff 'Joey' we all saw (because, of course, we all watched it) Joey head off to California to chase his acting dream.Well... unfortunately that didn't work out. We're expecting now that Joey lives in Monica and Chandler's basement. We're also expecting they don't know anything about it. (credit:Getty Images)
Rachel Green - Jennifer Aniston(05 of08)
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Presumably working some class of high-power fashion job in-between raising her 12-year-old daughter (yep, Emma would be 12 now...), we think Rachel would be pretty happy with her lot in life, though we might think twice before talking about Brad Pitt around her... (credit:PA)
Ross Geller - David Schwimmer(06 of08)
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Still adamant that he and Rachel were on a break. (credit:Getty Images)
Gunther - James Michael Tyler(07 of08)
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Staged a successful protest to stop Central Perk being turned into a Starbucks. He can still occasionally be found in the bushes outside Ross and Rachel's house. You know, for old times' sake. (credit:PA)
Janice - Maggie Wheeler(08 of08)
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Still surprising Monica and Chandler everywhere they go, with a shriek of "OH MY GOD" every single time, of course. (credit:Getty Images)