Fratton Park is full to capacity for Pompey’s home match against AFC Wimbledon.
Kenny Jackett’s side will be backed by another large crowd for the Boxing Day contest, which kicks-off at 3pm.
But supporters who have missed out on a place still have an opportunity to be there cheering on the Blues.
Season ticket holders who cannot make the match can make their seat available via our new ticket exchange scheme.
If a buyer is found they will receive a £5 credit in their online ticketing account, which can be used towards the renewal of their season ticket.
The easiest way to secure a seat from the ticket exchange is online here, but supporters can also contact the ticket office, either in person at Frogmore Road or by calling 0345 646 1898.
Click here for more information on how you can make your seat available or buy a seat using the ticket exchange.