Claus is a definite, I don't think I'd include Beatts simply because of the way it ended much as I loved his time here. Niemi would have been one had he stayed longer as he was a different class, Lallana has a few years before he acheives it but he's well on his way, honourable mentions to Pahars for his critical goals but he's more of a cult hero than an all time legend I think.
Super Kel with Lambert has probably done the most for this club in our time in the doldrums, a great ambassador and all round nice guy as well. I'd like to think Kelvin is up there.