Provided we were to put in a bid that meets whatever legal requirement there is, the onus would be entirely on him to accept or reject us.
If he rejected us of course he'd be a cunt. He would be deliberately choosing our biggest rivals over us after making the hugest, most sentimental hash of the motives for his departure, how much he loved Arsenal but his heart would always be Catalonian blah, blah, blah.
It would simply prove that all that was cant, which regardless of your respect for his actual motives would mean he was a gutless hypocrite.
