Show chiefs are planning for the pub landlady's mum to arrive in Weatherfield this summer and have already begun searching for an actress to play the part.
The Royle Family star Sue Johnston is thought to be at the top of producers' wish list.
A Coronation Street spokesperson today told Digital Spy: "We are currently looking to cast Stella's mother, but we would never comment on who we may or may not be interested in for a role."
However, a report in The Sun suggests that Johnston is "keen" to accept the part after being approached by the Coronation Street team.
A show source commented: "There are currently some great strong female characters at The Rovers with Stella, Leanne and Eva all in the mix, so to have a fantastic actress like Sue Johnston joining them would be perfect."
Stella (Michelle Collins) and her family joined the cobbles last June.
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Watch a preview of Friday night's (March 9) Coronation Street double bill in the video below: