There's on a couple of CFL free agents I could see the Bombers having interest in, but will be heavily dependent on their willingness to play and play cheap/incentive laden.
Bouka, DB national, you'll mostly know him from Sask. Has been a reasonable safety, played every position in Sask in that mess of a defense, would basically be here to cover kicks and provide depth, guy has a nose for the ball too, could see Richie Hall enjoying him being a ballhawk and a guy who can play all over.
Coleman, American DL, veteran, has been one of the most disruptive guys in the league in his prime pre 2020, but appears to be well past it. Would be looking at him to be a rotational guy, play both inside spots, and play cheap with no guarantees. At this point he might be retired or looking into US spring leagues.
Otherwise it'll be guys coming up from the US and draft picks.