The 63-year-old was arrested on suspicion of six offences relating to five victims in the early 1980s at Hazelwood Children's Home.
The arrest was part of an investigation into allegations of historical abuse at children's homes and other institutions in Nottinghamshire.
Operation Equinox has been informed of more than 600 alleged offences.
It is investigating claims of sexual, physical and emotional abuse between the 1940s and 1990s.
More on this and other stories in Nottinghamshire
In October, a letter to victims from Nottinghamshire Police confirmed 530 of 636 reported crimes were on council property.
Later that month, a 59-year-old woman was arrested and bailed on suspicion of indecent assault, actual bodily harm and indecency with a child.
In March, former social worker Andris Logins was jailed for 20 years.
Two other men have been jailed for historical attacks not connected to children's homes and three more trials are due to begin in early 2017.
A man has been arrested in connection with historical sexual offences at a children's home in Nottingham.