The 65-year-old actor-director, who last reprised his role of the Vietnam veteran in 2008's "Rambo", said he is writing a draft for one final instalment for his classic character to give him a fitting send off, reported Contactmusic.
"I know there is. It's one thing where you lay down the final culmination of your life where you can articulate it, but also act on it where he realises what his destiny really is.
"It's not to be a farmer, it's not to be obscure - it's to go out in a blaze of glory in a heroic fashion... That's who he is. I'm working on a formula for it right now," Stallone said.
Spotted: Lara Dutta, Mahesh Bhupathi with their daughter in Bandra
Photos: SRK, Tamannaah Bhatia, Varun Dhawan at Mehboob Studio
Birthday special: Sushant Singh Rajput's journey from TV to films
Photos: Vibrant Sonakshi Sinha opens LFW 2017 on a cruise ship
Health in pictures: 8 reasons why people have unprotected sex