It sounds to me as he is going there as back-up. In any case we are after a better keeper than both Kuipers & Sullivan (hopefully), so it won't matter.
My faith in the bald god is well and truly kept but letting Sullivan go was a very bad mistake IMHO; not least because it's easy to see how it was made: he was still playing great at a time when the team overall was rubbish, so it looks as if it's simply been assumed that he was rubbish. Which, emphatically, he isn't. Bit stupid all round.
Not too sure why we let him go to be honest, good luck to sully, he is a good keeper, put in a few good performances for us this season and certainly has a lot of potential
I was a bit surprised that Sully was released as I thought he had the potential to develop into a decent keeper - hope he does well at Millwall (though not against us, obviously!).
Shame he was not sold for some profit but was released by the club.
Good luck to him hope he takes over the no 1 jersey at the new den, I for one would have offered another contract, he is a good keeper. Anyone new we sign now has a clear benchmark in Sully.