Why not? Irish have Declan Kidney for goodness sake.
But Irish had money for Kidneys wages & also for buying in a lot of exciting talent.
What can wasps offer? "Come and sign up at Wasps, we've no money for you, or for buying in top players. we've got a decent squad but too many of them spend too much time on the treatment table. Club finances aren't in the best of shape, we're still embroiled in legal nonsense over the stadium sale & don't mention the training facilities!"
I can see a queue of top coaching talent queuing up to join 
Or the other side of exactly the same coin.
We have what should be an amazing squad but for some reason isn't firing. Several all blacks, a bunch of internationals, and a stack of players on the cusp. We also have a great academy starting to bring good youngsters through. We have the biggest ground in the Premiership and when things have gone well we've drawn crowds of up to 36k.
We've secured a big training facility and applied for planning permission to make it state of the art, but we can move in as it stands and you an have a big say in how it is set up.
We are only eight points of top four, five off top six.
If you can turn things around it's perfectly feasible to end the season going toe to toe with Exeter in the final again.
What sort of coach wouldn't want to take that on and be the saviour of a club with one of the best pedigrees in the game?
Always a Wasp