Idina Menzel is in final negotiations to return for the next season of Glee, and her character as Rachel Berry’s mother is apparently set for a major upgrade. This time around, according to Deadline’s Nikki Finke, Rachel’s biological mom is going to be a William McKinley High teacher, which obviously means Will Schuester, played by Matthew Morrison, is going to have some serious in-house competition when it comes to voting for “Teacher With the Best Singing Voice.†But looks like this may be just a one-season promotion, considering that Glee creator Ryan Murphy is axing graduating Lea Michele’s headlining role after this year. [Deadline]