Yes - but be aware that you will only be able to resell the ticket element of the package. So, if you wish to sell a ticket that you purchased as part of a package, it will be listed and then sent to your buyer as a standard ticket (with the price cap limited to the price of a standard ticket), and the amount you can sell for will be limited accordingly.
You should also know that, while you will still be able to enjoy any elements of the package delivered to you directly (e.g. merchandise). You won’t be able to use any parts of the package that are reliant on the ticket (e.g. meet and greets, parking etc) and you will not be able to claim a refund for any elements of the package that you are unable to take advantage of as a result of selling the ticket.