Spurs came close to sealing his signing during the transfer window in January but put the deal on hold after finalising a move for West Ham's Jermain Defoe.
Leeds' new owners have told Spurs the previous agreement for the England keeper is now null and void.
Spurs were under the impression they had first option on Robinson at £2.5m but Krasner said: "I don't know about any option, and it's not the sort of deal I would do anyway. We are not going to be forced sellers like we were when there was the threat of administration and we won't be giving away our best players."