UKIP could be in the position of the Liberals after the next election. Why they would do a deal with the tories before the election is political suicide. The tories are only trying to protect some vulnerable seats.
Much better UKIP fight the election in all constituencies and then do their dealing when the votes are cast.
Surely the danger with doing any deals with the Tories before the election is it will instantly turn off those who are voting for change.