So I guess I just have to wait until we have good enough 3D scanners to build a model of the non-cellular structures in the leg, then we need good enough 3D printers to print edible non-cellular structures at small enough sizes for the re-cellularization to work, and then I can eat a lab grown leg of lamb!
We basically just need a way to print 3D collagen. We largely know what the structure is, the problem is replicating it.
This is compounded because collagen strength/structure increases after deposition through the action of enzymes that crosslink collagen chains - a problem that would need to be overcome in order to print it