The 33-year-old was limited to just 10 matches for Botafogo after joining the Rio de Janeiro outfit from Shandong Luneng in January, reports Xinhua news agency.
"I'm not going to die a slow death. It's over. Finished," Montillo told a press conference on Thursday.
"Unfortunately my body was telling me that I'm not going to get back to 100% fitness. It's the right moment to go. I'm sure that this is the best decision for me and the club," he added.
Montillo was capped six times for Argentina's national team after also representing his country at the youth level.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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Doraiah Chowdary Vundavally is a Software engineer at VTech . He is the news editor of SocialNews.XYZ and Freelance writer-contributes Telugu and English Columns on Films, Politics, and Gossips. He is the primary contributor for South Cinema Section of SocialNews.XYZ. His mission is to help to develop SocialNews.XYZ into a News website that has no bias or judgement towards any.