this is an underrated part of the discussion. not luka specifically. but that trading for Fox doesnt kill flexibility like some make it out to be. lets not blow our wad here, lets wait for something better.
even if Fox doesnt work out great, look at what ATL did with Murray. they gave up too much for him, he signed an extension with them, and it didnt work out. but they then flipped him for 2 picks and dyson daniels and recouped a good amount of the value. assuming we extend fox, we'd have a very good player under a long term contract during his prime.