Roy Jones Jr. Considering 5-Fight Farewell Tour ... 'I Wanna Retire This Year'

47-year-old Roy Jones Jr. says he's finally ready to hang 'em up ... but he wants to go out by flooring 5 more fighters.

The boxing legend tells TMZ Sports he was inspired by the way Kobe Bryant called it quits this year -- and says he'd really like a farewell tour of his own.

In fact, RJJ says he wants to line up 5 more fights before the end of the year ... but he wants to take on guys he KNOWS he can beat.

"Five guys you should be able to deal with and call it a day."