It won't be Shai who leaves the club. It'll be the retirement of Grigg, Ellis most likely leaving via FA and Butler who has fallen out of favour that will allow us to get a deal done with plenty left over.
Your valuing seems about spot on. Already wanted the dogs to have a look before this surge in form, but now I'd be really keen. If he does leave the Tigers though, it's almost certainly going to be WA.
More likely we'd go for Butler since he's struggling to force his way in, and were desperate for small forwards