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The actress played Brenda Walsh in the teen drama for four years until she was sacked in 1994 after allegedly clashing with her co-stars.
She has met with 90210 producers Gabe Sachs and Jeff Judah but "wants to know what the story is going to be" before signing up, according to EW.com. She is also rumoured to be negotiating for more money.
Former co-stars Tori Spelling and Jennie Garth have joined the cast of the CW show, while Jason Priestley and Ian Ziering have also expressed an interest.
However, Luke Perry, who played Brenda's boyfriend Dylan McKay, insisted that he has no plans to appear.
Doherty currently stars in her own show Breaking Up With Shannen Doherty, in which she does "dirty work" for members of the public.
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