I think PP got the player option just in case he wasn't going to play next year. From what I remember he was always going to opt out, even if he wants to stay as he could get more money or another player option(so he can retire after next season and still get paid for a year.) So, I don't think this sways anything. He is just as likely to come here as he was before.
I hope he does though.
Pierce could have went to the Clippers or any other team last year. I think he wanted 3 things: to be on a winning team, to be a key part and to get paid. I think he again wants those things.
We should get a Come Home Pail campaign going.