Sly said he missed out on 2 Tarantino movies
https://www.instagram.com/p/B_vnmVSpZvh/
But had to pass due to schedule conflicts
I figure it might've been Pulp Fiction (Bruce's role as Butch), and Inglorious Bastards (Pitts role )
Kind of makes sense as both those roles would've add all kinds of sense for Stallone: Butch/Rocky, and I remember QT said IGB was originally set to be more a Dirty Dozen type action movie and to feature 80s action stars (so that must've been where Sly got the idea to do Expendables)
If its those 2 then 1994 hed had been busy with stuff like Specialist/Dredd/Assassins and in 2009 maybe Rambo4