I've been playing this game for a while now and never seen this problem before.
I've got a player transfer listed and on my squad page it shows that transfer bid is in for this particular player, when i click on his name is shows that a club has offered £12m for him. However there is nothing in my club messages and there is not an option to respond to the bid. It's happened twice with this same player now.
I've sold players before and never had a problem, this one is not giving me an option to respond.
Any advice would be appreciated.