A convicted rapist groomed a 15-year-old girl before arranging to meet her, Lincoln Crown Court was told.
Pensioner Alan Grant, who was on parole after being released from a life term of imprisonment, befriended the youngster and persuaded her to give him her mobile number claiming that he might be able to find work for her.
Caroline Bradley, prosecuting, said Grant later rang the girl and arranged to meet her at a Spar Shop in Boston before driving her to his caravan.
Grant started talking to her about how he used prostitutes and how another teenage girl had cleaned for him in return for sexual favours.
He then offered to give the 15-year-old £40 just for visiting his caravan but she rejected his money.
The girl, who had no idea of his background, later made a complaint to teachers after Grant turned up at her school to meet her.
Grant, 70, of Spice Avenue, Wyberton, denied charges of meeting a child following sexual grooming and travelling to meet a child after grooming as a result of the incidents in June 2014. He was found guilty by a jury and jailed for two-and-a-half years.
The court was told that Grant was convicted of rape in 1983 when he was jailed for four years and two years later he was given a life jail sentence for three attempted rapes. He served 20 years in prison before being released on parole. He has since been recalled to jail for breach of his parole.
Judge John Pini QC, passing sentence, on Friday told him: “It is quite clear that you were testing the boundaries as to how far you could go with this 15-year-old girl. She was uncomfortable but she would have been considerably more uncomfortable if she had known of your past.
“It clearly was your intent to commit sexual offences against her.”