Nottinghamshire Police are concerned for the state-of-mind of 31-year-old Vanessa Firth.
The mother-of-one, from Netherton Road, Manton, has not been seen since 6:45pm on Wednesday.
Officers and relatives have searched the local area, including Hannah Park and Library Gardens where she enjoys visiting, but she is nowhere to be found.
More top news
The Premier League champions had already qualified for the knock out stages but it was a humiliating night for Ranieri's men.
Daniel Seggie, 31, will appear before magistrates in Derby on Thursday accused of killing Geoff Seggie.
A 'radical shake up' of the workforce, cuts across the board & a council tax rise of 3.99% proposed by Birmingham City council for 2017.