Emanuele Fabrizio, 37, pleaded guilty in August to one count of continuous sexual abuse of a child and one count of lewd and lascivious acts on a child under 14 as part of a deal with the Santa Clara County District Attorney's Office, according to prosecutor Marisa McKeown.

Fabrizio, who was arrested in March by Sunnyvale police, was originally charged with 12 felony counts related to the sexual abuse of the girl, a player on one of his soccer teams. Fabrizio was facing a maximum of 40 years in prison if convicted as charged, McKeown said.

Police say Fabrizio volunteered for the West Valley Youth Soccer League, which includes youth players from West San Jose, Campbell, and portions of Saratoga, Los Gatos and Cupertino. It's unclear where the girl lived.

Authorities said the relationship began in October 2011 and continued until March. The pair had sex on two occasions, kissed at least 20 times and engaged in other sexual activity multiple times, according to court records. They say he also possessed child pornography of the girl and had multiple inappropriate sexual conversations with her.

"I'm grateful he accepted responsibility" McKeown said.

The father of the 13-year-old girl contacted police March 13 about her relationship with Fabrizio, police said.

After their initial investigation, police obtained a search warrant for Fabrizio's apartment and an arrest warrant.

At the time of his arrest, Fabrizio's Facebook, Twitter and LinkedIn pages indicated he worked as an interface engineer at PayPal and came to Silicon Valley from Italy. He is scheduled to be sentenced Monday.