The Celtic could also burn some of their unguaranteed contracts to facilitate a deal. Johnson and Babb for Withey and Ajinca? I'd consider that if I were Ainge, but I'd ask for one or two of Houston's extra second-round picks.
If Houston has a deal to dump Lin to Philly, Morey might be able to get the Sixers to accept someone like Austin Rivers.
Of course, if a Bosh deal falls through, the Rockets would probably be okay with letting the deal fall through and re-starting negotiations.