Very little. Perkin Warbeck's attempt on the throne was pathetic, really. In Ireland he found some (only some) support and he became a real threat to Henry by name, but he was only about to raise 2,000 Irish levies there. As he tried to come to England he lost all but one of his ships to an English squadron patrolling for him (which wouldn't be affected by this story) and landed in Cornwall with 200 men. There, he utterly failed to find any support whatsoever. The entire area had only just been defeated during a major rebellion and the local gentry and nobility had no interest in supporting him whatsoever. When Henry marched on him it was with a token force, and by the time he had started marching he knew that Warbeck was no danger - so much so that Warbeck ended up hiding in a monastery to avoid having to face the King. Really there's no part of Warbeck's story where Henry's not going to have enough money to deal with him. Henry almost needed no money to face Warbeck at all.
Oh, fine, just trying to think of something else, even if it is near ASB...