According to E! Online, the producers are looking for someone to play a psychiatrist later this season.
The character, who is described as "a very smart, cool and kind psychiatrist", is called Dr. Shane. However, further details of the storyline have not yet been released.
It is thought that the part is currently being considered as a guest role, but rumours have suggested that there is the possibility that Dr. Shane could recur.
The show also requires someone aged between 5 and 8 years old to play a "pudgy" child version of Lauren (Ashley Fink). It is not yet clear why Lauren's younger self is being introduced.
Glee airs on Tuesday at 8/7c on Fox in the US and on Monday at 9pm on E4 in the UK.