Yes, at first he was reluctant then after the show won Saturn awards, his agency called Fuller about a possible appearance, too late since it was cancelled.

It'll probably be like that Hannibal survived but Will doesn't since he's so successful in his new series lately. Oh! and Fuller has the Silence of the lambs rights so he makes twists like, Hannibal becoming like a shell of his own self after Will's passing and in comes Clarice, new meat.