Well, that's never a good idea. Tell him not to let it get to that point, that there's no reason to.

[ He needs to figure out where he'll get the blood from though. He could ask Tony or Steve, but he's not sure about passing around Steve's blood either. He and Clint haven't spoken much since he came back -- how's this for a conversation opener?

Ooh, maybe Wallie...

...right, having a conversation. ]

I get the impression most people here would rather help him out than let him starve.