Looking back, is JC Jackson the biggest free agency just in the teams history?

JC Jackson had one of the fastest falls from grace ever. 25 interceptions in his first 4 years, an all pro in 2021, and given an 82 million dollar deal in 2022. And now just two years later he was traded for a 7th round pick and then cut by that same team. Still unsigned with the season coming up his career might be over at just 28 years old. From all pro to out of the league in two years.

Obviously we can't know for certain if it was just BB magic that made him an all pro, if Staley ruined him, or if it was a classic get paid get lazy but he was a complete disaster. The team would have traded him for a bag of chips just to get him off the roster he was so bad.

I really can't think of any player in recent history that hurt the team as much as JC Jackson, both on and off the field. Had the team not signed him Keenan Allen would still be on the team. Negative production on the field and taking the best WR in the teams history with him? Honestly he might be the biggest free agency bust in league history. What other players left a team so much worse than it was when they found it?