Mullen is starting to come good at the Knights this year... behind a very badly beaten forward pack week in, week out too.
he's got a long way to go before he should be considered for a recall, though... he needs to keep playing good footy, for starters. i'd also have him outside Pearce, tbh... the wider Mullen is of the ruck the more he generally thrives... although he really has worked on his halfback play this year, getting his hands on the ball a bit more lately in particular.
anyway it's early days... i would still stick with Pearce and find him a partner from Mullen, Campese, Carney or i'd even give Soward a crack.