I bought 3 seats for the Burnley game from Seat Unique. Now, one of the group can’t go (a small matter of finding out about grandchild 3 on the way in May and doesn’t want to travel etc).

Do I have options to sell the ticket somewhere? I suspect I can’t just cancel with SU.

Never had to do this before so apologies for what may seem a naiive question.

Thanks in advance .