it happens to me all time as i dont like been big clubs because it it 2 easy to win. but what i seem to do is buy 2 really good expercied players and a up and coming player and has severd me good and never looked back thinking if i still had him
this happned to me and the bid wasnt even that great, i have realised that when a club makes an initial bid or an enquiry that it is better to scare them of by asking for 100 million.
the bid was only 5.5 million i suppose that alright for celtic though
u can't cancel a bid that were accepted by the board, the only thing u can do is give him the biggest contract u can, a hope for the best !
but beeing the other team man utd, it's very unlikely
maybe use the money to buy laurito or balotelli
or you can offer him to clubs for £0 then loads of clubs will come in and if he chooses one of the clubs that come in you can cancel it, thats what i always do