To me Corbyn as always been in the same 'donkey jacket' camp as Foot, and I don't think that he as made a claim otherwise.
Anti this- Anti that, and the proof of the pudding or his claims, will be on the day he is declared Prime Minister. Which is very highly unlikely.
I have suggested before, and I still hold the view, that the Labour Party only intended Corbyn's reign to be short-term, and not a long term venture. And I am still of the opinion that the 'other brother' is in the running for the next Labour Party leader, or gallant knight.