Very much doubt you'll get one to indicate, will be a waste of time imo. They were initially bred for coursing deer and wolves of which they do very well. Russians still use them on wolves as do yanks on coyotes. In the middle east they use Salukis on gazelles as they have more endurance and stronger pads/feet.
First cross greyhounds make incredible pig dogs too. Its also often a hard road training a ex racer to hunt in the bush too fyi. Alot you'll have to work through so if your going to train one up then best bet would be to get one from a pup.
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