Probably because he was there only good centre half and "leader".
He was okay 3 seasons back but the end of season before last, and last season he was atrocious. Turned into Titus Bramble as Titus Bramble turned into a good Richard Dunne hahaha.
Not buying into that one mate. Dunne is still club captain despite all the signings they have made this summer. I dont think Dunne is great, nor do i favour him to rejoin us, but he is not as bad a player has many are making out.