If Patty was to say "yes of course I have thought about it" the next question would be, "and what did you decide?", he would then say "I haven't made a decision yet", they would then say "which way do you think you are leaning?" to which he would need to give an answer, he can't really say "probably gonna bail" and if he says "I think I want to stay at the crows" and then when he does sit down with his family at the end of the year to make the final decision, if he changes his mind, he will be called a liar. "I haven't thought about it" is the easiest answer if he is still undecided.
It is fair enough for him to be undecided because he isn't the only person who's life is affected by the decision, he may have agreed with Mardi that at the end of the season, once he better knows the direction of the club and rivals, once Mardi knows what she wants to do with her career, they will sit down together and make a final decision and won't make an early decision based on emotion. It's also fair for him to want to know who the coach will be before he signs anything.