Yes, a pass rusher can still be signed in the NFL, but it would depend on the timing and the specific player involved. While the bulk of free-agent signings typically occur before or during the NFL offseason, some pass rushers remain available throughout the year, especially if they’re unsigned or if teams make changes due to injuries or roster adjustments.
For example, during the regular season or in the lead-up to it, free agents or recently released players could be signed, and teams may also make trade moves to acquire a pass rusher. However, the vast majority of high-profile free agents are usually signed before training camp begins, and signing a pass rusher midseason might come with additional challenges such as getting acclimated to the system quickly or being in game shape.
That said, teams in need of immediate pass-rush help often look to trade for a player rather than waiting for free agents to sign.