Canceling Amex Gold before achieving retention offer

My Amex Gold is up for renewal soon and I recently accepted a retention offer (25k points for $2k spend in 3 months). However, after some consideration, I’ve decided I don’t want the card anymore, even with the retention offer.

I haven’t achieved the retention offer because I just accepted it a few days ago, so would I be able to cancel the card without consequence (Amex blacklisting, fee, legal issue, etc.)?

Thanks for your help!