I don't think it was ever said. I know, at the time, I said I'd rather we spent a basic wage in bringing Law in, than spending top dollar, in Motherwell terms, on an injury-prone 30-something.
Josh Law, despite not living up to his early promise (first 20 minutes against Stjarnan that equates to!), contributed 10x more last season than what James McFadden did for St. Johnstone, and what, IMO, he would have done for Motherwell. That's not praise for Law either, he was piss poor for a fair chunk of the season.
As Al B said, let it lie. Signing James McFadden would be absolute madness, and the equivalent of pissing money down the drain.