Keep him in Britain. There will be many in the Liberal Party delighted that Lynton Crosby has got the gig helping the British Conservative Party try and hang on to power. The last thing those back in the campaign director's home country with even a small amount of liberalism in their Liberalism want is to see any further lurching to the right by their party. The push now is to get Tony Abbott to moderate his stands rather than strengthen his conservative and reactionary views.
And that's if the Opposition Leader survives at all. There are many in his party who believe it is too late for Tony Abbott to change the extremely negative view that most voters have of him. A replacement is what they are increasingly talking about.