O.J. Simpson isn’t losing sleep over the knife found on his property, but his former manager says Simpson is “a little worried” about what it means for him getting out on parole next year.

“(O.J.) is a little worried because if it’s one of his pocket knifes and, if it’s got his blood on it, that could make him look bad when he’s up for parole,” Norman Pardo told People.

Simpson is currently serving a 9- to 33-year sentence for a robbery and kidnapping conviction following a 2008 incident in Nevada. Simpson was acquitted in the murders of his ex-wife, Nicole Brown Simpson and her friend, Ron Goldman, in 1995.

The Los Angeles Police Department said it is testing a knife that was found years ago on Simpson’s Brentwood property after it was recently turned over to police.

“When he heard the news on TV, all he did was shake his head, as if to say, ‘Will this ever end?'” Pardo told People.

Pardo also said he believes the knife belonged to a construction worker.

Even if testing concludes the knife is connected to the murder case, double jeopardy would prevent Simpson from being tried again.