He talked to The Monday Morning Quarterback (MMQB) and said competing in the NFC West and having the chance to play against his former team, the Seattle Seahawks, twice in a season played a role in his free-agency decision.
RELATED: Richard Sherman switching teams in NFC West, to join 49ers on three-year deal
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Sherman told the MMQB, "I'm vengeful in that way."
He also questioned Seahawks fans reaction to his signing with the team's rival.
RELATED: Richard Sherman on Seahawks exit: 'I didn't abandon anybody'
Sherman told The MMQB, "I love the fan base to death, and I loved playing there. It was such a great opportunity. I helped the organization get to a great place and stay there. But now it's like I abandoned them. People are out there burning my jersey. Come on. I'm not the one who let me go. They let me go. I didn't abandon anybody."
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The 49ers and the former All-Pro player agreed to a three-year deal worth up to $39.15 million.
Click here for the latest on the 49ers.
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